【12V 3-PIN TRACTOR SOCKET】The 12V 3-pin tractor trailer socket features a waterproof silicone seal. The thermoplastic housing prevents rust or corrosion, ensuring a longer service life. The 3-pin trailer socket is an ideal replacement part for old or damaged sockets. 【HIGH QUALITY】This 3-pin trailer socket and 3-pin socket are suitable for standard European trailers. The connector 3-pin provides a secure connection to power electronic signal lights and power transmissions between your primary vehicle and your additional truck or trailer. 【EXQUISITE DESIGN】The spring-loaded cover can lock the 3 sockets in use and protect the socket when not in use. Our 3-pin connector is made of silicone rubber and equipped with a waterproof rubber gasket. The thermoplastic housing prevents rust or corrosion, and the sturdy housing ensures a longer service life. 【APPLICATION】The 3-pin socket connection system is used for tractors and agricultural machinery and used for end-user electrical connections