General description The AlwaysH Plastic Trailer Plug is a brand new trailer lighting circuit harness adapter converter designed for towing US vehicles equipped with a 4-pin flat plug to European trailers that utilize a 13-pin round plug. This professional design effectively splits the "stop" signals of American vehicles into two lines, allowing for seamless connectivity with European trailers, caravans, and bike racks. Technical specifications Type: 4 Pin Flat Socket to 13 Pin Round Plug Adapter Material: High-quality plastic Features: Lightweight, wear-resistant, weather-resistant, waterproof Compatibility and accessories Compatible with US vehicles with 4-pin flat plugs Compatible with European trailers with 13-pin round plugs Installation Easy to install with a plug-and-play design No new wiring required No splicing or cutting needed Other information Includes a dust cover on the side of the 13-pin plug to keep it clean when not in use