Versatile compatibility: This 4-pin to 7-pin trailer adapter plug is suitable for a variety of trailers and vehicles, all towing vehicles that do not require electric brakes, including trailers, semi-trailers, RVs, etc.
Safe connection: This trailer adapter is made of plastic and metal, and the inner core is made of pure copper, which greatly improves the conductivity. The tractor is only equipped with a 4-pin interface (such as some pickup trucks, SUVs), but the trailer requires a 7-pin interface (such as RVs with electric brakes or backup power, large container trailers).
Electrical interface conversion: Convert the 4-pin flat plug (US standard) on the vehicle end to the 7-pin round or flat plug (US standard) on the trailer end to solve the interface mismatch problem. Support transmission for additional functions: 4-pin only contains basic functions (brake lights, turn signals, tail lights, ground wires), while 7-pin adds electric brakes, 12V power supply, reverse lights and other lines
Bracket design: Fixed plug position to prevent loosening or wear during driving, improve durability and safety. Provide more power for trailers (such as RV battery charging, electric brake controller, interior lighting, etc.)
Note: The trailer adapter must ensure that the 4-pin vehicle end line corresponds to the 7-pin trailer end (usually the adapter's built-in circuit conversion is required). The 12V power supply load capacity of the 4-pin interface is low, and high-power devices may need to be powered separately. It is recommended to test all lights and functions (such as electric brakes) before going on the road
