Wiring Trailer Lamp With Red and Black Wires

Question:

I have on the right side tail lamp red and black wires. From there I have 2 Brown wires that attaches to green wire Ang green with yellow stripe wire

asked by: Wendell S

Expert Reply:

On the taillight itself, the black is typically the running lamp and the red is usually the brake lamp and turn signal. As far as the wiring on your trailer goes, the brown wire is for the running lights, the yellow is for the left turn signal/brake lamp and the green wire is right turn and brake lamp. If the lamp doesn't have a dedicated white ground wire, it will get its ground connection through its connection to the trailer frame.

I've linked to some trailer wiring diagrams that you'll find helpful.

expert reply by: Mike L