I had the same problem. It was my alternator. Be careful, mine died on the way home.
The alternator may have a faulty rectifier or faulty voltage regulator
On my Lexus I had an issue with the lights staying off when it was cold. This was the case for all of my dashboard lights. Then they would flicker back on. There are Caps on the board for the instrument panel that were blown. This was the case for my fuel cage that didn't work consistently work as well
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 the dash board ground connection...it may be loose
depends on which lights? inside over head? /Dash board?/Doors? /front headlights?/Flashers?/ turn signals?/ Backing lights?/ Parking lights?/ So which ones ? what Year??
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?
Turn up your dimmer switch. Should be next to the steering wheel on the dash board.
The radio display is usually tied to the dash board lights. As you raise or lower the illumination on the dash, the radio lights should change. During the day (with your headlights off), the radio display is at full brightness so it is easier to read in daylight.
Your daytime running lights (DRL) are on.
Assuming headlights, check fuses. Overheadlights, check override button left side of dash board near odometer.
there is a circuit board inside each tail light assy that is shorting out --- common problem on the venture. pretty soon the light will quit completely. around $35 for each side for the bulb sockets and board