Polaris General/Ranger XP 19+ Plug and Play 4 Pin Trailer Light Adapter - XTC Power Products
Amazon.com: Oyviny US to EU Trailer Light Converter US 4 Way to EU 7 Way Trailer Light Adapter USA Vehicle 4-Pin Flat Plug to European Trailer 7-Pin Round Connector Plug and Play
Trailer Connector USA 4-Pin Flat Plug To European7-Pin Connector 4 To 7 Trailer Light Converter Circuit Connector Adapter - AliExpress
7-Way Round to 7-Way Flat Adapter | Innovative Products of America
Curt 57003 7-Way RV Blade LED Electrical Adapter | U-Haul
TowSmart 7-Way Blade to 4 or 5-Way Flat Trailer Light Wiring Adapter 1426 - The Home Depot
Trailer Wiring Adapter: 7 Way Euro Round To Flat 4 Conversion Plug