CURT 5-Way Flat Connector Plug with 48" Wires (Trailer Side, Packaged) 58541 - The Home Depot
Amazon.com: Oyviny 5 Way Flat Trailer Wiring Harness Plug with 22 inch Wire Lead Trailer End Durable 5 Pin Male Connector Trailer Light Wiring Harness Extension for Trailer RV Boat Color-Coded Waterproof :
Boat Trailer Light Wiring Harness 5 Flat 25ft with Full Length Ground Wires