TowSmart 7-Way Blade to 4 or 5-Way Flat Trailer Light Wiring Adapter 1426 - The Home Depot
7-Way Round to 7 Pin Round Trailer Adapter Plug RV LED Light Tow Connector Blade | eBay
Amazon.com: CXTM 7 RV Blade to 6 Pole Round, 6 Way to 7 Way Adapter 7-Way Blade to 6-Way Round Trailer Adapter 7 pin to 6 pin Trailer Wiring Plug Adapter : Automotive