Three Prong To 4 Flat Trailer Light Wiring Diagram

Cut the white wire short enough for attachment to the front of the trailer near the connector plug.

Three prong to 4 flat trailer light wiring diagram. As the name implies they use four wires to carry out the vital lighting functions. Signals to work with the towed cars 3 wire system contains everything you need to wire your car for flat towing 6 hy power diodes tail light converter 30 long strand of 4 wire electrical cord. Tail lights brake lights left right signals. They also provide a wire for a ground connection.

At a minimum all trailers need at least 4 functions. One to two feet is good. The four wires control the turn signals brake lights and taillights or running lights. Some vehicles use a combination bulb dual filament for turn and stop.

Strip the wire end back about a 12 inch and insert it into a terminal with a heat shrink tube. The most common 4 wire connector is the 4 pin flat connector as shown here. Tow vehicle has same bulb for lighting stop and turn signals. While the basic configuration is a 4 way flat connector that features one female and three male ends you may come across connectors with up to seven pins for additional functions that require wiring including electrically actuated brakes power source for a winch etc.

4 pole flat loop and wiring converter included. 4 way trailer connectors are available in two styles. 4 wires will give these functions so the simplest scheme is a 4 pin connector. The white wire must be attached to the trailer in order to ground and power the lights.