Join Date: Nov 2013
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My brother noticed yesterday that my brake lights on the trailer were not working. Usually a bad connection or a fuse but not this time. So far I have checked both fuse boxes, all the bulbs are fine, connectors are fine, 3rd brake light is good, turn signals work, hazards, running lights, but no brakes?
I also checked for voltage at the brake pedal switch and it has 2 sources of 12v constant. While the pedal is depressed, I get 1 green wire with red line on it that activates and passes current but not thru the other wires.
Also, my truck has a electric brake controller in the cab for a trailer. When I press the button on the side to engage the lights, the brake lights for the truck and the trailer come on?!?!?
Stumped here, any thoughts?