As the name implies, they use four. 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). Web 6 way system, rectangle plug.
4 Wire Trailer Wiring Diagram Troubleshooting Printable Form
u haul wiring diagram 7 way
4 Pin Trailer Wiring Diagram 4 Pin Trailer Connector Wiring Diagram
Tips for Installing 4Pin Trailer Wiring AxleAddict
Wiring A Trailer 4 Wire Wiring For Trailer Lights 4 wire trailers
Trailer Light Wiring Diagram 4 Pin Free Wiring Diagram
4 Way Trailer Wiring Diagram Cadician's Blog
Wishbone Trailer Wiring Diagram Eco Lab
4 Wire Trailer Wiring Diagram Troubleshooting Printable Form
