7Pin 3M Trailer Extension Lead7 Pin trailer extension cable connector establishing connection between vehicle and additional trailer and transferring electronic signal lights from vehicle to trailer. European Standard7 Pin trailer plug trailer extension lead passed certification and trailer extension cable suitable for for towing most european car, tractor, boat, truck brake joint pipe, semi-trailer, box train, and container transporter, connecting the signal lights of your vehicle to the trailer. Easy To Assemble 7 core trailer cable/7 pin trailer light cable extension lead male to female easy to install, supplies power to your caravan, towing and truck, to prevent being troubled by the emergency, such as the car breaks down. Waterproof Durable This 7 pin trailer adapter is made of high quality PU/TPU material with a durable housing, long service life, durable, waterproof material, trailer pin extension towing wire has high elasticity, with high toughnessdurability. Wide Application7 pin trailer extension cable male to male 3m long extension lead suitable for extending the cable on towing most European Caravan/ RV/ tractor/ Trailer connector/ car/ truck/ brake joint/ semi-trailer/ box train/ container transporter.