Features:Suitable for 7-pin heavy European standard trailer.Establishes a secure connection between your major vehicle and the additional trailer; Transfers the electronic signal lights from the vehicle to trailer.Supplies power to your caravan， towing and truck.Brass pins in a durable metal housing.Waterproof for all road and weather conditions. Specifications:Item Type: Electrical Plug & SocketsItem Name: 7-Pin Trailer PlugMaterial: AluminumColor: SilverInput: 12VItem size: 9.2(H) * 4(D)cm / 3.6(H) * 1.6(D)inPackage size: 16.5 * 10.5 * 4cm / 6.5 * 4.1 * 1.6inPackage weight: 95g / 3.4ozWiring configuration:Pin Wire Color Function1 Yellow L / H Direction Indicator2 Blue Rear Fog Lamps3 White Earth Return4 Green R / H Direction Indicator5 Brown R / H Tail & No. Plate Lamp6 Red Stop Lamps7 Black L / H Tail & No. Plate LampPackage List: 1 * 7-Pin Trailer Plug