Amazon.com: Maso Trailer Electrics Plug 13 to 7 pin Tow bar Socket Screws Caravan Electric Towing Plug and Socket Suitable for European Standard Trailer, Truck, Caravan, etc. 12V : Automotive
Adapter 7 til 13-polet trailerstik - UNITRAILER
Trailer Light Converter for European Round 13-Pin Plug to US 7-Way Blade Adapter | eBay