4-Pin Flat Wiring Harness 20 Feet Jacketed Cable Trailer-Side Standard 4 Way Trailer Adapter 18AWG Pure Copper Color-Coded 4 Pin Trailer Connector 4 Wire Trailer Wiring. Upgraded Design: 4-pin trailer wiring plug designed with wider tabs on both side for better grip when plugging in and out, 4 way trailer wire is widely used on marine boat trailer, horse trailer, ATV, cargo utility etc.

4-Pin Flat Wiring Harness 20 Feet Jacketed Cable Trailer-Side Standard 4 Way Trailer Adapter 18AWG Pure Copper Color-Coded 4 Pin Trailer Connector 4 Wire Trailer Wiring. Upgraded Design: 4-pin trailer wiring plug designed with wider tabs on both side for better grip when plugging in and out, 4 way trailer wire is widely used on marine boat trailer, horse trailer, ATV, cargo utility etc.