Here is a good link on how to wire a relay:

http://www.classictruckshop.com/club...osch/relay.htm

The clicking you hear is from the stock Jeep relay which is way up on
the back center of the dash plate.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

William Oliveri wrote:
>
> Hi all,
>
> 83 CJ7, 258, I6
>
> I'm trying to wire an air horn which was on my jeep when I bought it but
> never hooked up correctly.
>
> I have the following diagram I've been using to hook it up and I have a
> couple of questions.
>
> http://members.bigvalley.net/wuji/hornwiring.jpg
>
> Q1: From the positive battery pole to the 30 pole on the switch, I don't
> have this wire. Is this something I should fabricate or can I buy it?
>
> Q2: Where do I find the wire which goes to the 85 pole from the wiring
> harness? Where would the single pole, double throw switch be? Under dash
> or behind firewall? Should I also fabricate this wire or should it be in
> the wiring harness?
>
> Thanks for any help,
>
> Bill