K. I'm about to go check. But the right side stays on like it should. It's just that left top light. Will be back with results.

 

this is what it looks like with the headlights on. when i press the brake the light comes on!

 

and i think i do have some more lights out. gona check when my wife gets home. not gona move the truck til 2morow!

 

The red lights next to the yellow turn signals on the bumper are also illuminated on my 94 when the lights are on. Well they do now after a lot of fiddling with the system.

 

I was having the same issue. Make sure all the lights work. I had to buy new pigtails for front side lights as there was water in the bulbs. Still had problem with the brake lights. I made sure bulbs were in right by rotating them. Still nothing. Had it checked to make sure it had power there and it did. I took it to another garage was told it was the metal part that the socket went in. This mechanic rewired the brake lights separately and now it works. Hope this helps

 

Guess I'll go get someone to check them out. Don't know if I wana figure out this wire thing!