Amazon.com: OPT7 7 Pin to 4 Pin Trailer Adapter with Secure Tab, 7 Way Blade to 4 Way Flat Trailer Light Adapter, Connector for Trailer Tow Hitch and Redline LED Tailgate Light Bar : Automotive
Hopkins 7 Blade to 4 Flat Adapter
Hopkins Towing Solutions Multi-Tow 7 Blade to 5 and 4 Flat Adapter, New, 47385 - Walmart.com
Trailer Light Electrical Adapter | StowAway
Redline ADP627RV Trailer Connector Adapter - Converts 6-Way Round to 7-Way RV Plug | Hanna Trailer Supply
Amazon.com: MECMO 7 Pole Round to 7 Way RV Blade Trailer Adapter Connector, 7 Pin Round to 7 Pin RV Die-Cast Zinc Female Socket, Semi Truck Trailer Adapter for Commercial Vehicle, Pickup