Trailer wiring question
So, I just picked up a cheap hitch cover with LED brake light built in
that plugs into the trailer wiring connector. Problem is, it only taps the green lead, so the light behaves exactly like the right brake/turn light and blinks when I'm signaling right. My goals are as follows: 1) Have the hitch light be on when the brakes are on. 2) Have the hitch light NOT blink when either turn signal is on. 3) Not damage my Jeep's electrical system in any way. The question is this: Can I use an isolating diode (like the Roadmaster Hy-Power) to connect both the left (yellow) and right (green) feeds together and use that as an input for the LED array? My thinking is that when the brakes are on, I've got #1 covered, since both inputs to the diode are giving a solid 12v. When one turn signal or the other is on, the light will still be getting a solid 12v from whichever light isn't blinking, taking care of #2. I'm still good on #3 as well, since the diode would protect the left and right circuits from interfering with each other. I think I've got this right and was just going to start experimenting, but first I wanted someone with more electronics experience to check my thinking so I wouldn't accidentally miss goal #3. :) -- ~/Garth - 1993 Wrangler S 2.5 { }|||||||{ } "MukYJ" |
Re: Trailer wiring question
why don't you just figure out which wire has power only when the tail lights
are on and you'd be good to go? OR am I missing something? Garth Almgren wrote: >So, I just picked up a cheap hitch cover with LED brake light built in >that plugs into the trailer wiring connector. Problem is, it only taps >the green lead, so the light behaves exactly like the right brake/turn >light and blinks when I'm signaling right. > >My goals are as follows: >1) Have the hitch light be on when the brakes are on. >2) Have the hitch light NOT blink when either turn signal is on. >3) Not damage my Jeep's electrical system in any way. > >The question is this: Can I use an isolating diode (like the Roadmaster >Hy-Power) to connect both the left (yellow) and right (green) feeds >together and use that as an input for the LED array? > >My thinking is that when the brakes are on, I've got #1 covered, since >both inputs to the diode are giving a solid 12v. When one turn signal or >the other is on, the light will still be getting a solid 12v from >whichever light isn't blinking, taking care of #2. I'm still good on #3 >as well, since the diode would protect the left and right circuits from >interfering with each other. > >I think I've got this right and was just going to start experimenting, >but first I wanted someone with more electronics experience to check my >thinking so I wouldn't accidentally miss goal #3. :) > -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200707/1 |
Re: Trailer wiring question
why don't you just figure out which wire has power only when the tail lights
are on and you'd be good to go? OR am I missing something? Garth Almgren wrote: >So, I just picked up a cheap hitch cover with LED brake light built in >that plugs into the trailer wiring connector. Problem is, it only taps >the green lead, so the light behaves exactly like the right brake/turn >light and blinks when I'm signaling right. > >My goals are as follows: >1) Have the hitch light be on when the brakes are on. >2) Have the hitch light NOT blink when either turn signal is on. >3) Not damage my Jeep's electrical system in any way. > >The question is this: Can I use an isolating diode (like the Roadmaster >Hy-Power) to connect both the left (yellow) and right (green) feeds >together and use that as an input for the LED array? > >My thinking is that when the brakes are on, I've got #1 covered, since >both inputs to the diode are giving a solid 12v. When one turn signal or >the other is on, the light will still be getting a solid 12v from >whichever light isn't blinking, taking care of #2. I'm still good on #3 >as well, since the diode would protect the left and right circuits from >interfering with each other. > >I think I've got this right and was just going to start experimenting, >but first I wanted someone with more electronics experience to check my >thinking so I wouldn't accidentally miss goal #3. :) > -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200707/1 |
Re: Trailer wiring question
why don't you just figure out which wire has power only when the tail lights
are on and you'd be good to go? OR am I missing something? Garth Almgren wrote: >So, I just picked up a cheap hitch cover with LED brake light built in >that plugs into the trailer wiring connector. Problem is, it only taps >the green lead, so the light behaves exactly like the right brake/turn >light and blinks when I'm signaling right. > >My goals are as follows: >1) Have the hitch light be on when the brakes are on. >2) Have the hitch light NOT blink when either turn signal is on. >3) Not damage my Jeep's electrical system in any way. > >The question is this: Can I use an isolating diode (like the Roadmaster >Hy-Power) to connect both the left (yellow) and right (green) feeds >together and use that as an input for the LED array? > >My thinking is that when the brakes are on, I've got #1 covered, since >both inputs to the diode are giving a solid 12v. When one turn signal or >the other is on, the light will still be getting a solid 12v from >whichever light isn't blinking, taking care of #2. I'm still good on #3 >as well, since the diode would protect the left and right circuits from >interfering with each other. > >I think I've got this right and was just going to start experimenting, >but first I wanted someone with more electronics experience to check my >thinking so I wouldn't accidentally miss goal #3. :) > -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200707/1 |
Re: Trailer wiring question
why don't you just figure out which wire has power only when the tail lights
are on and you'd be good to go? OR am I missing something? Garth Almgren wrote: >So, I just picked up a cheap hitch cover with LED brake light built in >that plugs into the trailer wiring connector. Problem is, it only taps >the green lead, so the light behaves exactly like the right brake/turn >light and blinks when I'm signaling right. > >My goals are as follows: >1) Have the hitch light be on when the brakes are on. >2) Have the hitch light NOT blink when either turn signal is on. >3) Not damage my Jeep's electrical system in any way. > >The question is this: Can I use an isolating diode (like the Roadmaster >Hy-Power) to connect both the left (yellow) and right (green) feeds >together and use that as an input for the LED array? > >My thinking is that when the brakes are on, I've got #1 covered, since >both inputs to the diode are giving a solid 12v. When one turn signal or >the other is on, the light will still be getting a solid 12v from >whichever light isn't blinking, taking care of #2. I'm still good on #3 >as well, since the diode would protect the left and right circuits from >interfering with each other. > >I think I've got this right and was just going to start experimenting, >but first I wanted someone with more electronics experience to check my >thinking so I wouldn't accidentally miss goal #3. :) > -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx/jeep-cars/200707/1 |
Re: Trailer wiring question
Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote:
> why don't you just figure out which wire has power only when the tail lights > are on and you'd be good to go? OR am I missing something? What you're missing is standard 4-flat trailer wiring: One wire for ground, one wire for running lights, one wire for left brake/turn, and one for right brake/turn. :) Besides, since the Jeep has a combination brake/turn signal in the rear (one dual-filament bulb does triple duty as running lights, brake lights, and turn signals) and is one year early for a CHMSL (center high-mounted stop light), there is no single wire that does only brakes. -- ~/Garth - 1993 Wrangler S 2.5 { }|||||||{ } "MukYJ" |
Re: Trailer wiring question
Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote:
> why don't you just figure out which wire has power only when the tail lights > are on and you'd be good to go? OR am I missing something? What you're missing is standard 4-flat trailer wiring: One wire for ground, one wire for running lights, one wire for left brake/turn, and one for right brake/turn. :) Besides, since the Jeep has a combination brake/turn signal in the rear (one dual-filament bulb does triple duty as running lights, brake lights, and turn signals) and is one year early for a CHMSL (center high-mounted stop light), there is no single wire that does only brakes. -- ~/Garth - 1993 Wrangler S 2.5 { }|||||||{ } "MukYJ" |
Re: Trailer wiring question
Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote:
> why don't you just figure out which wire has power only when the tail lights > are on and you'd be good to go? OR am I missing something? What you're missing is standard 4-flat trailer wiring: One wire for ground, one wire for running lights, one wire for left brake/turn, and one for right brake/turn. :) Besides, since the Jeep has a combination brake/turn signal in the rear (one dual-filament bulb does triple duty as running lights, brake lights, and turn signals) and is one year early for a CHMSL (center high-mounted stop light), there is no single wire that does only brakes. -- ~/Garth - 1993 Wrangler S 2.5 { }|||||||{ } "MukYJ" |
Re: Trailer wiring question
Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote:
> why don't you just figure out which wire has power only when the tail lights > are on and you'd be good to go? OR am I missing something? What you're missing is standard 4-flat trailer wiring: One wire for ground, one wire for running lights, one wire for left brake/turn, and one for right brake/turn. :) Besides, since the Jeep has a combination brake/turn signal in the rear (one dual-filament bulb does triple duty as running lights, brake lights, and turn signals) and is one year early for a CHMSL (center high-mounted stop light), there is no single wire that does only brakes. -- ~/Garth - 1993 Wrangler S 2.5 { }|||||||{ } "MukYJ" |
Re: Trailer wiring question
On Mon, 16 Jul 2007 21:12:05 -0700, Garth Almgren <nospam@mukyj.com>
wrote: >Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote: > >> why don't you just figure out which wire has power only when the tail lights >> are on and you'd be good to go? OR am I missing something? > > >What you're missing is standard 4-flat trailer wiring: One wire for >ground, one wire for running lights, one wire for left brake/turn, and >one for right brake/turn. :) > > >Besides, since the Jeep has a combination brake/turn signal in the rear >(one dual-filament bulb does triple duty as running lights, brake >lights, and turn signals) and is one year early for a CHMSL (center >high-mounted stop light), there is no single wire that does only brakes. The problem here is that, unless the brakes are applied, the LED assy is still going to get left or right turn signal power, and the LED is going to blink. As long as you always apply the brakes before you activate the turn signals, what you propose will work. Of course that is not normal operation. Right off hand I don't know how you would make it work like you want. I'll sleep on it. :-) ---- -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 21:12:05 -0700, Garth Almgren <nospam@mukyj.com>
wrote: >Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote: > >> why don't you just figure out which wire has power only when the tail lights >> are on and you'd be good to go? OR am I missing something? > > >What you're missing is standard 4-flat trailer wiring: One wire for >ground, one wire for running lights, one wire for left brake/turn, and >one for right brake/turn. :) > > >Besides, since the Jeep has a combination brake/turn signal in the rear >(one dual-filament bulb does triple duty as running lights, brake >lights, and turn signals) and is one year early for a CHMSL (center >high-mounted stop light), there is no single wire that does only brakes. The problem here is that, unless the brakes are applied, the LED assy is still going to get left or right turn signal power, and the LED is going to blink. As long as you always apply the brakes before you activate the turn signals, what you propose will work. Of course that is not normal operation. Right off hand I don't know how you would make it work like you want. I'll sleep on it. :-) ---- -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 21:12:05 -0700, Garth Almgren <nospam@mukyj.com>
wrote: >Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote: > >> why don't you just figure out which wire has power only when the tail lights >> are on and you'd be good to go? OR am I missing something? > > >What you're missing is standard 4-flat trailer wiring: One wire for >ground, one wire for running lights, one wire for left brake/turn, and >one for right brake/turn. :) > > >Besides, since the Jeep has a combination brake/turn signal in the rear >(one dual-filament bulb does triple duty as running lights, brake >lights, and turn signals) and is one year early for a CHMSL (center >high-mounted stop light), there is no single wire that does only brakes. The problem here is that, unless the brakes are applied, the LED assy is still going to get left or right turn signal power, and the LED is going to blink. As long as you always apply the brakes before you activate the turn signals, what you propose will work. Of course that is not normal operation. Right off hand I don't know how you would make it work like you want. I'll sleep on it. :-) ---- -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 21:12:05 -0700, Garth Almgren <nospam@mukyj.com>
wrote: >Around 7/16/2007 8:54 PM, RSMuddog via CarKB.com wrote: > >> why don't you just figure out which wire has power only when the tail lights >> are on and you'd be good to go? OR am I missing something? > > >What you're missing is standard 4-flat trailer wiring: One wire for >ground, one wire for running lights, one wire for left brake/turn, and >one for right brake/turn. :) > > >Besides, since the Jeep has a combination brake/turn signal in the rear >(one dual-filament bulb does triple duty as running lights, brake >lights, and turn signals) and is one year early for a CHMSL (center >high-mounted stop light), there is no single wire that does only brakes. The problem here is that, unless the brakes are applied, the LED assy is still going to get left or right turn signal power, and the LED is going to blink. As long as you always apply the brakes before you activate the turn signals, what you propose will work. Of course that is not normal operation. Right off hand I don't know how you would make it work like you want. I'll sleep on it. :-) ---- -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Don't you have a wire leading to that Mexican third light, that everyone
takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Garth Almgren" <nospam@mukyj.com> wrote in message news:5g2qu4F3e9u76U1@mid.individual.net... > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > > -- > ~/Garth - 1993 Wrangler S 2.5 > { }|||||||{ } "MukYJ" -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Don't you have a wire leading to that Mexican third light, that everyone
takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Garth Almgren" <nospam@mukyj.com> wrote in message news:5g2qu4F3e9u76U1@mid.individual.net... > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > > -- > ~/Garth - 1993 Wrangler S 2.5 > { }|||||||{ } "MukYJ" -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Don't you have a wire leading to that Mexican third light, that everyone
takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Garth Almgren" <nospam@mukyj.com> wrote in message news:5g2qu4F3e9u76U1@mid.individual.net... > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > > -- > ~/Garth - 1993 Wrangler S 2.5 > { }|||||||{ } "MukYJ" -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Don't you have a wire leading to that Mexican third light, that everyone
takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Garth Almgren" <nospam@mukyj.com> wrote in message news:5g2qu4F3e9u76U1@mid.individual.net... > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > > -- > ~/Garth - 1993 Wrangler S 2.5 > { }|||||||{ } "MukYJ" -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Do you have a "third brake light" you can tap into?
Spdloader |
Re: Trailer wiring question
Do you have a "third brake light" you can tap into?
Spdloader |
Re: Trailer wiring question
Do you have a "third brake light" you can tap into?
Spdloader |
Re: Trailer wiring question
Do you have a "third brake light" you can tap into?
Spdloader |
Re: Trailer wiring question
You can't do what you want with diodes. Someone designed that unit and
some silly 3rd brake light units for trailers without knowing how the power actually works. These units are useless because there is no way to distinguish power from the brake pedal switch or from the signal switch. Power is power. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Garth Almgren wrote: > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > |
Re: Trailer wiring question
You can't do what you want with diodes. Someone designed that unit and
some silly 3rd brake light units for trailers without knowing how the power actually works. These units are useless because there is no way to distinguish power from the brake pedal switch or from the signal switch. Power is power. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Garth Almgren wrote: > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > |
Re: Trailer wiring question
You can't do what you want with diodes. Someone designed that unit and
some silly 3rd brake light units for trailers without knowing how the power actually works. These units are useless because there is no way to distinguish power from the brake pedal switch or from the signal switch. Power is power. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Garth Almgren wrote: > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > |
Re: Trailer wiring question
You can't do what you want with diodes. Someone designed that unit and
some silly 3rd brake light units for trailers without knowing how the power actually works. These units are useless because there is no way to distinguish power from the brake pedal switch or from the signal switch. Power is power. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) Garth Almgren wrote: > So, I just picked up a cheap hitch cover with LED brake light built in > that plugs into the trailer wiring connector. Problem is, it only taps > the green lead, so the light behaves exactly like the right brake/turn > light and blinks when I'm signaling right. > > My goals are as follows: > 1) Have the hitch light be on when the brakes are on. > 2) Have the hitch light NOT blink when either turn signal is on. > 3) Not damage my Jeep's electrical system in any way. > > The question is this: Can I use an isolating diode (like the Roadmaster > Hy-Power) to connect both the left (yellow) and right (green) feeds > together and use that as an input for the LED array? > > My thinking is that when the brakes are on, I've got #1 covered, since > both inputs to the diode are giving a solid 12v. When one turn signal or > the other is on, the light will still be getting a solid 12v from > whichever light isn't blinking, taking care of #2. I'm still good on #3 > as well, since the diode would protect the left and right circuits from > interfering with each other. > > I think I've got this right and was just going to start experimenting, > but first I wanted someone with more electronics experience to check my > thinking so I wouldn't accidentally miss goal #3. :) > > |
Re: Trailer wiring question
On Mon, 16 Jul 2007 22:32:37 -0700, "L.W. \(Bill\) ------ III"
<LWBill------@------.net> wrote: > Don't you have a wire leading to that Mexican third light, that everyone >takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg Well I wish someone would throw one my way. I wanna put it back*on* my Jeep. The previous owner thought it looked better without it, I guess. -- Old Crow "Yol Bolsun!" '82 FLTC-P "Miss Pearl" '95 YJ Rio Grande BS#133, SENS, TOMKAT, MAMBM -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 22:32:37 -0700, "L.W. \(Bill\) ------ III"
<LWBill------@------.net> wrote: > Don't you have a wire leading to that Mexican third light, that everyone >takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg Well I wish someone would throw one my way. I wanna put it back*on* my Jeep. The previous owner thought it looked better without it, I guess. -- Old Crow "Yol Bolsun!" '82 FLTC-P "Miss Pearl" '95 YJ Rio Grande BS#133, SENS, TOMKAT, MAMBM -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 22:32:37 -0700, "L.W. \(Bill\) ------ III"
<LWBill------@------.net> wrote: > Don't you have a wire leading to that Mexican third light, that everyone >takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg Well I wish someone would throw one my way. I wanna put it back*on* my Jeep. The previous owner thought it looked better without it, I guess. -- Old Crow "Yol Bolsun!" '82 FLTC-P "Miss Pearl" '95 YJ Rio Grande BS#133, SENS, TOMKAT, MAMBM -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Mon, 16 Jul 2007 22:32:37 -0700, "L.W. \(Bill\) ------ III"
<LWBill------@------.net> wrote: > Don't you have a wire leading to that Mexican third light, that everyone >takes off and throws away? http://www.4x4xplor.com/images/LoD/LoD-12.jpg Well I wish someone would throw one my way. I wanna put it back*on* my Jeep. The previous owner thought it looked better without it, I guess. -- Old Crow "Yol Bolsun!" '82 FLTC-P "Miss Pearl" '95 YJ Rio Grande BS#133, SENS, TOMKAT, MAMBM -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Sounds like you've never been to Tijuana.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Old Crow" <walliscrow@yahoo.com> wrote in message news:ecpr93pk7hhf2ubjosi99jgois4684jnh9@4ax.com... > > Well I wish someone would throw one my way. I wanna put it back*on* > my Jeep. The previous owner thought it looked better without it, I > guess. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '95 YJ Rio Grande > BS#133, SENS, TOMKAT, MAMBM > > > -- > Posted via a free Usenet account from http://www.teranews.com > -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Sounds like you've never been to Tijuana.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Old Crow" <walliscrow@yahoo.com> wrote in message news:ecpr93pk7hhf2ubjosi99jgois4684jnh9@4ax.com... > > Well I wish someone would throw one my way. I wanna put it back*on* > my Jeep. The previous owner thought it looked better without it, I > guess. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '95 YJ Rio Grande > BS#133, SENS, TOMKAT, MAMBM > > > -- > Posted via a free Usenet account from http://www.teranews.com > -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Sounds like you've never been to Tijuana.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Old Crow" <walliscrow@yahoo.com> wrote in message news:ecpr93pk7hhf2ubjosi99jgois4684jnh9@4ax.com... > > Well I wish someone would throw one my way. I wanna put it back*on* > my Jeep. The previous owner thought it looked better without it, I > guess. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '95 YJ Rio Grande > BS#133, SENS, TOMKAT, MAMBM > > > -- > Posted via a free Usenet account from http://www.teranews.com > -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
Sounds like you've never been to Tijuana.
God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ "Old Crow" <walliscrow@yahoo.com> wrote in message news:ecpr93pk7hhf2ubjosi99jgois4684jnh9@4ax.com... > > Well I wish someone would throw one my way. I wanna put it back*on* > my Jeep. The previous owner thought it looked better without it, I > guess. > -- > Old Crow "Yol Bolsun!" > '82 FLTC-P "Miss Pearl" > '95 YJ Rio Grande > BS#133, SENS, TOMKAT, MAMBM > > > -- > Posted via a free Usenet account from http://www.teranews.com > -- Posted via a free Usenet account from http://www.teranews.com |
Re: Trailer wiring question
On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote:
> You can't do what you want with diodes. Someone designed that unit and > some silly 3rd brake light units for trailers without knowing how the > power actually works. These units are useless because there is no way > to distinguish power from the brake pedal switch or from the signal > switch. Power is power. Very good point, and as someone else pointed out, my method would still have it blinking when I'm signalling but not on the brakes. On the upside, there seem to be a couple 3rd brake logic circuits that'll work much better than my diode idea for sale at JC Whitney. Example: http://www.jcwhitney.com/autoparts/I...D:100000213268 -- ~Garth (via Google) |
Re: Trailer wiring question
On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote:
> You can't do what you want with diodes. Someone designed that unit and > some silly 3rd brake light units for trailers without knowing how the > power actually works. These units are useless because there is no way > to distinguish power from the brake pedal switch or from the signal > switch. Power is power. Very good point, and as someone else pointed out, my method would still have it blinking when I'm signalling but not on the brakes. On the upside, there seem to be a couple 3rd brake logic circuits that'll work much better than my diode idea for sale at JC Whitney. Example: http://www.jcwhitney.com/autoparts/I...D:100000213268 -- ~Garth (via Google) |
Re: Trailer wiring question
On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote:
> You can't do what you want with diodes. Someone designed that unit and > some silly 3rd brake light units for trailers without knowing how the > power actually works. These units are useless because there is no way > to distinguish power from the brake pedal switch or from the signal > switch. Power is power. Very good point, and as someone else pointed out, my method would still have it blinking when I'm signalling but not on the brakes. On the upside, there seem to be a couple 3rd brake logic circuits that'll work much better than my diode idea for sale at JC Whitney. Example: http://www.jcwhitney.com/autoparts/I...D:100000213268 -- ~Garth (via Google) |
Re: Trailer wiring question
On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote:
> You can't do what you want with diodes. Someone designed that unit and > some silly 3rd brake light units for trailers without knowing how the > power actually works. These units are useless because there is no way > to distinguish power from the brake pedal switch or from the signal > switch. Power is power. Very good point, and as someone else pointed out, my method would still have it blinking when I'm signalling but not on the brakes. On the upside, there seem to be a couple 3rd brake logic circuits that'll work much better than my diode idea for sale at JC Whitney. Example: http://www.jcwhitney.com/autoparts/I...D:100000213268 -- ~Garth (via Google) |
Re: Trailer wiring question
Garth Almgren wrote:
> On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote: > >> You can't do what you want with diodes. Someone designed that unit and >> some silly 3rd brake light units for trailers without knowing how the >> power actually works. These units are useless because there is no way >> to distinguish power from the brake pedal switch or from the signal >> switch. Power is power. > > Very good point, and as someone else pointed out, my method would > still have it blinking when I'm signalling but not on the brakes. > > On the upside, there seem to be a couple 3rd brake logic circuits > that'll work much better than my diode idea for sale at JC Whitney. > Example: > http://www.jcwhitney.com/autoparts/I...D:100000213268 > > -- > ~Garth (via Google) > That is an interesting unit and would do the trick. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: Trailer wiring question
Garth Almgren wrote:
> On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote: > >> You can't do what you want with diodes. Someone designed that unit and >> some silly 3rd brake light units for trailers without knowing how the >> power actually works. These units are useless because there is no way >> to distinguish power from the brake pedal switch or from the signal >> switch. Power is power. > > Very good point, and as someone else pointed out, my method would > still have it blinking when I'm signalling but not on the brakes. > > On the upside, there seem to be a couple 3rd brake logic circuits > that'll work much better than my diode idea for sale at JC Whitney. > Example: > http://www.jcwhitney.com/autoparts/I...D:100000213268 > > -- > ~Garth (via Google) > That is an interesting unit and would do the trick. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: Trailer wiring question
Garth Almgren wrote:
> On Jul 17, 7:10 am, Mike Romain <roma...@sympatico.ca> wrote: > >> You can't do what you want with diodes. Someone designed that unit and >> some silly 3rd brake light units for trailers without knowing how the >> power actually works. These units are useless because there is no way >> to distinguish power from the brake pedal switch or from the signal >> switch. Power is power. > > Very good point, and as someone else pointed out, my method would > still have it blinking when I'm signalling but not on the brakes. > > On the upside, there seem to be a couple 3rd brake logic circuits > that'll work much better than my diode idea for sale at JC Whitney. > Example: > http://www.jcwhitney.com/autoparts/I...D:100000213268 > > -- > ~Garth (via Google) > That is an interesting unit and would do the trick. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
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