With Headlights off, press the brake and just the right brake light illuminates. Turn on the lights it quits working. Leaving work the day before a co-worker told me pretty much the same thing except that the left illuminated with lights on only, right worked the same, only with lights off... Whoever the genius was that hooked up the trailer lights connection didn't think they need the plug in the pass thru.....

 

Well either no one has a clue on this or we don't have many electrical experts... lol!

 

Fixed it!

 

may you could post how for the next person

 

I failed to take pics other than the first two I posted. Issue was multiple problems. Corroded connections on lamp housing and sockets, brittle insulation on wiring making contact with metal and where they ran the wires thru the floor unprotected for the trailer light harness, 2 of them had rubbed thru to bare wire. Cut out trailer light module and moved it under truck. Spliced or replaced all bad wiring and cleaned all contact points on lamp housing and sockets. Lastly went ahead and replaced all bulbs.

 

Oh wow that is almost as bad as what the previous owner did with the power windows. Will be putting up a whole bunch of pics and such once I tear into that, but long story short. They chopped the wires from the switches for the rear, and ran their own power wires after they had tapped into the yellow ignition wire with a inline fuse.

 

I had to do a massive rewire on my dash when I first got my D1. someone added this huge pioneer amp under the pass seat and ran a bunch of wiring to and from the radio (which was missing) and tried to tie it into the factory speaker wiring. I tore it all out and rewired back to original wiring, then made an adapter for an aftermarket radio. Been working fine for 3 years now...

I have all my trailer wiring inside the back end. In Minnesota, the road salt chews up wiring after a short time. Cleaning bulb sockets and wires is a common project, as is fixing up the hacked job people do to add trailer lights.

My favorite was one car I got that would honk the horn when you step on the brakes...

 

Wow you sure you didn't own my D1? Cause that sounds like a exact match to what someone did with mine, right down to the Pioneer amp. Well cept they didn't tie into factory speakers they just cut the amp plug and thew it away

 

seems like all the troubles I have had with my truck are quite common. rear lights, brake switch failure (can't get it out of park) front and rear windows not working, back door latch sticking, etc. Glad this site is here!!