the other night i was driving along lights worked fine, stopped and washed my car and all of a sudden when i went to turn it back on the guage lights and shift indicator light did not come on with the headlights, fuses seem fine, checked the TAIL ACC INST-LIGHTS and a few other fuses in the fuse box, i had been in the process of changing the lights over to a red accent bulb i was half way done, but none of the lights work back there
any clues?

 

Have you checked the dimmer switch?

 

Have you messed with any wiring behind the radio?