CURT 4-Way Flat Connector Plug & Socket with 12" Wires Each (Packaged) 58304 - The Home Depot
Trailer Wiring Diagram and Installation Help - Towing 101
Amazon.com: DOAUTO 29Ft 4 Way 4-Pin Flat Trailer Wiring Harness Extension Kit with Dual White Ground Wire, 25' Male & 4' Female Wishbone 18 Gauge Connector with Full Terminal SAE J1128 with
Amazon.com: MICTUNING Trailer Wiring Harness Extension Kit - 4 Pin 25 Feet Male and 6 Feet Female Connector, 18 AWG Color Coded 4-Way Flat Wires for Under or Over 80 Inches Wide Trailers : Automotive
Amazon.com: Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire 4-Flat Connector with Male & Female Plug 18 AWG 26 inch Hitch Light Trailer Wiring Harness Extender : Automotive