4 Wire Boat Trailer Wiring Diagram. Find your 4 wire boat trailer wiring diagram here for 4 wire boat trailer wiring diagram and you can print out. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. A 4 way plug connects your trailer and tow vehicle and provides the required running lights turn signals ground and brake lights.
4 way tow vehicle side. The four wires control the turn signals brake lights and taillights or running lights. Can trailer 4 way be ran to trailer with 8 wires for trailer wiring. 4 way trailer connectors are.
4 way trailer connectors are.
4 way tow vehicle side. The white wire ground on the following boat trailer wiring diagram is drawn in grey so that you can see it against the white background. The standard four prong connector to connect the trailer to the tow vehicle is perfect for a simple trailer light system. A 4 way plug connects your trailer and tow vehicle and provides the required running lights turn signals ground and brake lights. You must check the trailer manual to see if the wiring is correct but normally the white wire is called the ground wire while the brown wire is used for tail lights.