Wired back my 1954 ford truck with original wiring harness. Every thing is fine but i dont have brake lights. When I turn lights on i have headlights and tail lights but no brake light with lights on or off. Bought the harness (green wire and black wire) thought it might be brake sensor it was new but ordered a low pressure one. I have a black and green wire connected to the sensor and have a black and green the green is showing 12 volts. I have the new round tail lights form mid fifty that has a black and green wire and a small bolt and nut on the housing at the back (assumed that is for ground wire) Could some one tell me how to wire to get rake lights to work the rear lights come on when i turn the lights on but brake lights will not with lights on or off. Thanks

 

If you have tail ights you must have good ground, and should have two wires to each tailight' tail light and signal light ? Does you brake circuit feed through your turnsignal module ?

 

The truck is stock all original no turn signals or fuse box.

 

Short the brake switch wires together to see if the lights work.

I wouldn't rule out a ground problem, sometimes they'll back-feed thru the other filament