Usage Tips:[7Pin Trailer Extension Lead]7 pin trailer light wire connector establishing connection between vehicle and additional trailer and transferring electronic signal lights from vehicle to trailer. [European Standard]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 Connector trailer light 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 material with a durable housing, long service life, durable, waterproof material, trailer pin extension towing wire has high elasticity, with high toughness&durability. [Wide Application]7 pin 3 meters 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. Length: 3 meters Material:PVC colour:black Package Contents: 1 * Trailer Extension Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.