Trailer ground or blown relay-fuse

[CowpokeJ]

Pulling trailer yesterday, lights work. Brake controller only works sliding the manual switch. Nothing when you step on the brake pedal. Green light on controller on. Ground or fuse?

 

[dun]

Sounds like th e the brake peddle sensor is bad.

 

[CowpokeJ]

It's on a 02 Dodge Diesel 2500 if that helps...

 

[tom4018]

Does the light change color when applying brakes? What brand controller? Possible loose wire from brake light switch or bad switch. Does the truck's brake lights work?

 

[hillrancher]

It's on a 02 Dodge Diesel 2500 if that helps...

On the left fender weld under the hood is a fuse & and breaker box. There are special circuits for lights and breaks ect. For trailers and aux. I know had the same trouble took it to the dealer they were running special wires said open in the harness. Found this fuse and circuit box. Only fuses blown.