1994 Jaguar XJ6 "relay makes tail lights work" Questions

...be getting power to the third brake light in the rear window...that is a different circuit and will not be affected. Try changing out the bulb failure relay, it supplies the power to the tail

...tail lights dont, replaced all fuses and bulbs did you change any relays  swap some relays to see if you can get the tail lights working but something else will fail    do you mean ...

...cold. check head lights and tail lights relay.replace fan relay.check ac compressor make sure its getting power. if all good have ac check to make sure it have the right amount refrigerate in

...relay when you replce bulb make sure you get the corect number most have 2 filament in bulb ,if you put a 1 filament bulb it will cause all kind of weird stuff like keeping your indicator on ,or your ...

...tail light relay is bad. if you swap the headlight relay and the tail light relay, i bet your tail light will work and the head lights won't. then you'll know for sure its the relay. I have the ...

...relay has nothing to do with the tail lights, but replacing the switch sounds like a good idea. There's a nut holding it in place, see ...

...tail lights don't. all fuses are good and so are the bulbs. Is there a relay and if so where is it located. check to make sure they are grounded especially if you just recently hooked up a trailer or ...

relay for indicators and seem to have lost power to left side park light, tail light and dash light. Recheck your work. Pull the connector off at the flasher and inspect it before plugging it back in.

...relay under the hood, make sure you check all fuse associate to the fog lights and tail lights as there are may be more then one fuse assigned to the lights. For the fog lights there is a switch ...

makes diagnosis far more easy. turn dash cabin dimmer on high. too. the fuse box i most cars they will be marked, TAIL or PARK did you even look? ok the schematic is on my screen,(alldata.com) fuse j4