I have a 94 ext cab 4x4. I have not had it that long. I bought it without a bed and just put one on. All my lights work except that brake lights on the bed. The 3rd brake light on the cab works. I have checked everything I can think of but no luck.

Any ideas? Is the 3rd brake light and the brake lights on the bed on a different wire and fuse?

Thanks!

 

The light on the cab runs on a different circuit then the back lights. The back lights come up through the floor right under the passenger seat. If you lift the carpet up or look under the cab you can see where they go through. I would start testing at the plug there and see if you are getting power. If so then it is your wiring going to the back.

 

Does the bed brake lights have there own fuse?

 

Tail lights have there own fuse called TAIL. You will have to check the brake switch by the pedal.