Features:Suitable for 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.Converts the 7-pin socket on your car to the 13-pin female socket.Supplies power to your caravan， towing and truck.Slim line design: same diameter as a normal trailer plug and just over half the length.Plastic housing prevents rusting and enhances appearance.Waterproof for all road and weather conditions. Specifications:Item Type: Electrical Plug & SocketsItem Name: 7 To 13 Pin AdapterMaterial: PlasticColor: BlackInput: 12VItem size: 4.5(D) * 8(H)cm / 1.8(D) * 3.1(D)inPackage size: 16.5 * 10.5 * 5cm / 6.5 * 4.1 * 2.0inPackage weight: 85g / 3.0ozWiring configuration:7 Pin Lighting Connections - 12 N Black Cable FunctionPin 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 Lamp13 Pin Lighting Connections - Cable FunctionPin Wire Color Function1 Yellow Left Indicator2 Blue Fog Light3 White Earth Return4 Green Right Indicator5 Brown Right tail / Side Light6 Red Brake / Stop Lights7 Black Left tail / Side Light8 Pink Reversing Light9 Orange 12V Permanent power from battery10 Grey 12V Ignition on (Battery charging or Fridge)11 White / Black Earth for Teminal 1012 White / Blue NOT usually used13 White / Red Earth for Teminal 9Package List: 1 * 7 To 13 Pin Adapter