WESTFALIA Automotive Adaptor 7-pin to 13-pin to connect 7pin socket on the vehicle to 13pin socket on the trailer or bike carrier : Amazon.co.uk: Automotive
Thule 9907 13-pin to 7-pin Adapter - Car Racks - Cycle SuperStore
13 Pin Turn 7 Pin Plug Socket Waterproof Trailer Car Tow Conversion Adapter - Walmart.com
Amazon.com: CARROFIX US Vehicle 7-Way Blade Connector to European 13-Pin Round Trailer Light Converter - Plug and Play Design : Automotive
13 Pin to 7 Pin Towing Adaptor,Caravan Truck Tow Bar Trailer Plug Adapter 12V Waterproof Electric Adaptors Socket Converter Connector - Walmart.com
Thule 9907 13-Pin to 7-Pin Adaptor | Rear Door Racks | wiggle.com
4 Pin US Flat To European 13-Pin Trailer Connector Plug Light-Adapter Converter - Walmart.com
Ring 7 to 13 Pin Adapter | Halfords UK
Trailer Light Converter for European Round 13-Pin Plug to US 7-Way Blade Adapter 607376356405 | eBay