the fuse that controls the interior lights, running board,an rear wiper is blown. it is a 15amp fuse in the panel. Also,try the cluster dimmer position since it controls the running board lights and exterior mirror lights as well.This dimmer is located next to the headlight switch.Good luck!
check your fuses
I am not a mechanic, however as an electrician it sounds like the running board lights are wired to the same relay as the interior lights. To check this, simply crank the truck, leave all the exterior lights off, turn on the interior light, then walk around the truck and look at the running board lights. If they are on then turn the interior light off and the parking lights on, check to see if the running board lights come back on. Depending on the make and model of the truck, I could be way off in left field and this info may not apply. uuummmm.....programing?
why is my dash board lights not working
You may have a pull on your batt, or a surge.
check the fuse and the park lamp relay
There are several things that can cause your 2000 Cadillac dashboard lights to quit working. The most common cause is a blown fuse.
Your daytime running lights (DRL) are on.
Check your fuses again-use test light. Almost always seems to be a fuse when both tail lights and dash lights aren't working at same time. If that fails, check headlight switch
Is there a penny stuck in the lighter port?
run a wire from battery positive to an inline fuse, then to a switch that you have to install in your dash. from the switch to the lights, then to ground. turn on switch, lights should work.
They probably aren't grounded.
If this is an electronic unit, the heat generated after the lights are on for one half hour, is affecting the intergrity of the electronic circuit board.