Trailer adapter: 13 to 7. 12V, allows you to connect a trailer with a 7-pin plug (ALT) to vehicles equipped with a new 13-pin plug. Easy to install: no tools required, takes only a few minutes. 13 pins for the power plug and 7 pins for the trailer. Robust and compact: made of high-quality ABS plastic, super strong and durable, guaranteed to last at least one year. Pocket size, very compact, a convenient car accessory. Only suitable for those who own a car with a 13-pin plug. If you have a trailer with a 7-pin plug, please confirm compatibility before purchase. 13-pin to 7-pin trailer adapter, truck trailer plug adapter features: Uses injection molding technology. Waterproof, suitable for all road and weather conditions. Converts your car's 13-pin plug to a 7-pin female socket. Transfers electronic lights from the vehicle to the trailer. Suitable for European standard trailers, commercial vehicles, semi-trailers, etc. Safe and reliable performance, and a well-designed layout. Exquisite appearance and easy to use. Features: Product type: Electrical plugs and sockets; Product name: 13-to-7-pin adapter; Material: Engineering plastic; Voltage: 12V; Color: Black