4 Wire Trailer Light Wiring Harness. Installing Side Marker Clearance Lights with Two Wires on Trailer. Wiring Trailer Lights with a 4-Way Plug Its Easier Than You Think Many standard light-duty trailers such as many boat trailers and utility trailers use a 4-way wiring harness to connect to the tow vehicle.
Step 3 Connect the yellow white and brown wires of the harness to the like-colored wires on the trailer with butt connectors. Assortment of 5 wire to 4 wire trailer wiring diagram. Cheap wiring harness Buy Quality cable.
4 wires will give these functions so the simplest scheme is a 4-pin connector.
Do 4-Way Connectors Have a Power Wire. Trailer Wiring Kit and Supplies Buy a 4-pin wiring kit with wires at least twenty feet in length so its long enough for your trailer. SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness This wiring harness kit is exhaustively sealed to ensure corrosion-proof assembly. This connection provides the required running lights turn signals and brake lights for the trailer.