Tow Ready 4-Flat to 6-Way Round Pin Connector Adapters | 4wheelparts.com
Amazon.com: Trailer Plug Adapter 4-Way Flat to 7-Way Round Blade and 4 Way Trailer Wiring Harness Adapter Vehicle-Side 4 Pin to Trailer-Side 7 Pin and 4 Pin Dual-Output Connector for Trailer Tow
Amazon.com: X AUTOHAUX 4 Way Flat to 7 Way Round Blade Trailer Adapter Plug End 4 Pin to 7 Pin Electrical Connector W/Mounting Bracket for Car RV Truck : Automotive
Amazon.com: RED WOLF 7 Way Round to 4 Way Flat Trailer Coiled Wiring Harness Connector Adapter Plug Converter Camper Hitch Towing Vehicle-Side 7 Pin Round to 4 Pin Wiring Harness 50 Inch Cord : Automotive
48 Inch 4-Way Flat to 6-Way Round Pin Connector (Metal)