i have an '88 w/an inline 6 and the running lights/interior gauge lights have gone out. i know they share the same fuse circuit but the fuse is fine. i was thinking it was the ground but have no idea where to even look for it. any help would be appreciated.

 

I had this same problem but it was in a Honda. Found out it was a broken wire under the carpet right below the pedals. The PO was a Woman that wore heels everyday and I think her heels might of cut the wire through the carpet. Anyways, I fixed that wire and all was good.

 

Ok, how about the lights around the climate controls?

If all are dead, you would have to start looking for power at the headlight switch itself.

Adrianspeeder

 

nothing in the cab at all. was driving and it seemed poer was dimming. now nothing. i remember hearing a little click when they went. that's why i thought it was the fuse.

 

power.

 

Don't know about the electrics on your model year but it sounds like the voltage regulator on the instrument panel (not the one under the hood) puked

 

well, tried the headlight switch and still the same. any ideas where the voltage regulator is or if it is called something else because i can not find anything in the manual called "voltage regulator".

 

On older cars and trucks with hydrolic brake light switches, when the brake lights would go bad so would the dash lights.

Don't know if this applies to your case, but it's worth checking.

 

It's not the brake switch or the ICVR - neither would affect the courtesy lights. It's the terminal in the headlight switch connector; they're known to burn off, particularly on the park/courtesy/dimming power feed wire (Tn/Wh). If that's OK, it has to be in the fuse block or the wiring between the fuse & switch.

 

so does that mean the socket the headlight switch connects to?

 

Yes, that would be

 

any idea where the relays are?

 

What relays?

 

sound like a headlight switch to me.i,ve got the same problem.everything worked fine .next time,nothing at all.fuse was fine.

 

aren't there relays between the battery and the fuses?