Trailer Wiring Problems, Running Lights, Brake Lights

[computersshot]

Or it could be a bad wiring harness on truck

[computersshot]

it's a bad placed bulb when twisted on i think

[djshorty8604]

Ok well just to inform everyone, there was no bad ground, it ended up being the wiring module. Thx

[fiveisaacs]

@djshorty8604 are you talking about the wiring module on the truck by the connector? can you be more specific as i have the same problem you are having. Thx

[dorin2042]

Bad ground on trailer. The jeep has the trailer parking lights fuse blown.

[formerkillerz]

bad ground



[mjc8bal]

Bad ground

[vhanktank]

I have a very similar problem on an '85 Chev C-20 P.U. Trailer checks out fine with brake lights and turn signals, but running lights won't work. Having tested the leads, I am convinced the problem is with the truck and not the trailer. Since the tail lights, license plate light, etc. work on the truck, itself, I have concluded that it must be one of two things: a defective connection or wire or plug connecting the tail light feed to the plug-in; or I am not getting a ground on that circuit.

[apintonut]

bad ground on trailer