Cargo Trailer Wiring

You need to know how your trailer is wired

Wires are often pulled through holes made in the crossmembers and ran along the inside of the frame. Some higher end manufacturers use wire tubing to protect the wiring and run the tubing along the inside of the frame, not through holes in the crossmembers.

If the trailer has brakes, the brake wires are spliced into the wiring. They are then pulled down or up the back of the trailer for the back lights, along the top inside corners of the walls for splicing in the exterior side lights, and then finally ran to the front of the trailer where the vehicle plug is attached.

Factories differ somewhat on where and how they run wiring. Ask you dealer if you need wiring details.

This is an example of how some manufactures rout wiring through the crossmembers.