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The dash lights are on the same circuit as the tail lights/park lights. If the front park lights are not on as well, look for a blown fuse . If fuse is ok. possible headlight switch/relay/wiring problem
On "most" vehicles, the parking, tail, lic plate AND dash lights are all on the same circuit. Usually, the fuse will be labeld "park", "tail", or "illum".
If you have dash lights but no park lights, it's likely that there is a break in the wiring somewhere...
If the fuse blows, you have a dead short to ground somewhere, likely around the tail lights or parking lights. Try this:
Get a box of the correct fuses.
Remove all tail and parking bulbs and put in a new fuse. If the fuse does not blow, try installing each bulb at a time to see which light assembly causes the fuse to blow.
Let's suppose its the RH tail light assembly. Pull it off the car and check for dirt and damaged wiring.
If this is an older vehicle, there may be wiring damage (due to rust) in the harness under the carpets.
Check your fuses first, park lights, I think. Pull the light switch to first click and check if your front park lights are on. If no lights are on, the headlight switch is probably bad. If the fronts work, but no tail lights or dash lights, the problem is probably a wiring problem under the dash. The same wire to the rear tail lights is usually with a splice to the dash illumination lights.
My dash light doesn't work either, I lose lights in dash at night when I have the headlights on. As for your car, thats kinda weird your fronts work but not the back. Have you already checked the fuse boxes? they are on the driver and passenger sides almost under the dash in front of the doors. If all your fuse are good and in the right spots, then I would check the bulbs out back to make sure they are not rusted inside or cut or something like that.
No. Dash lights being out could be a bad headlight switch, since the dash lights are routed through the headlight switch, not the dimmer switch. Park and tail lights also controlled by the headlight switch.
That info is not in my wiring diagrams. It should be in your owners manual if you still have it. The fuses should be in the glove box or the box in the engine compartment labeled cluster lamp or dash lamp and Tail or Park. Keep in mind you are dealing with two different circuits so two different fuses. If both fuses are good, check for power output at the headlight switch.