From the '95 XJ FSM:
DOME/COURTESY LAMP SERVICE

INFORMATION-XJ

Voltage is applied at all times via the dome lamp

fuse to each of the interior lamp bulbs. The interior

lamp bulbs illuminate when they are connected to

body ground via the switch:

² Headlamp switch.

² Glove box switch.

² Door pillar switch.

² Liftgate switch (if the cargo lamp is ON).

If equipped with Security Alarm Module, refer to

Group 8Q, Vehicle Theft Security System.



It appears that if your lights are on full time that they are being grounded
somewhere other than through the switch.


"DougW" <post.replies@invalid.address> wrote in message
news:oBrAh.103284$5q6.91453@newsfe17.lga...
> Peter Bogiatzidis wrote:
>> That's not the problem. When I tested the new headlight switch for
>> proper operation I could see a noticeable flicker when it was turned
>> to that position. As I stated in my original post, the courtesy
>> lights stay on without a headlight switch installed. I'm thinking
>> maybe there's possibly a relay that's stuck, but haven't found out if
>> there is one in the circuit or not.
>
> In the ZJ the courtesy lights have a timer and relay that is supposed to
> shut them off after the door closes + a few minutes. That relay is under
> the glovebox bottom, but I don't think yours is in the same place.
> Don't have a book for your year.
>
> --
> DougW
>