4-Way Flat Trailer End Connector 25 Inch, 16AWG 4 Prong Trailer Wiring Harness Plug with Dust Cover, Trailer-Side 4-Pin Trailer Light Plug Male End Replacement Connector for Trailer Hitch Wire

MICTUNING 4-Way Flat to 7-Way Round Blade Trailer Adapter Wiring Plug Connector with Mounting Bracket

Trailer Wiring Diagram

Wiring schematic or wire colors for 4 prong trailer...

Wiring Trailer Lights with a 4-Way Plug (With Wiring Diagram)

OEM Style Replacement USCAR Connector Wiring Harness, Universal 7 Pin Trailer Plug Truck Side, Splice-in Multi-Tow Factory 7 Way Towing Hitch Wire for Ford, GM, Chevy Silverado, GMC Sierra Dodge