Feature:1. 7pin connector, used to establish a secure connection between tractor and trailer.2. Pure copper contact with good conductivity, fast connection, reliable and easy to use.3. Anticorrosion plastic socket, and the antiseismic internal design can eliminate short circuit.4. Standard European trailer connector, widely used in commercial vehicles, semi trailers, trailers.5. Compact size, lightweight and portable, easy to carry, bring much convenience for you.Specification:Condition: Brand NewItem Type: Trailer ConnectorMaterial: ABS + CopperColor: BlackCable Length: Approx. 1.5m/4.9ftMain Function: Connect truck and power supply, suitable for trailer signal light displayScope of Application: Trailer connectorType: SocketShape: RoundWiring Configuration:7 Pin Lighting Connections - 12 N Black Cable FunctionPIN 1 - Yellow Wire (Left/H Direction Indicator)PIN 2 - Blue Wire ( Rear Fog Lamps )PIN 3 - White Wire ( Earth Return )PIN 4 - Green Wire (Right/H Direction Indicator)PIN 5 - Brown Wire (Right/H Tail & No. Plate Lamp )PIN 6 - Red Wire (Stop Lamps )PIN 7 - Black Wire (Left/H Tail & No. Plate Lamp )Caravan 7 pin supplementary circuits 12S grey cable functionPin 1 Yellow Reversing Lamps Pin 2 Blue Battery Charging (original UK system)Pin 3 White Earth Return (for pins 2&4)Pin 4 Green Power SupplyPin 5 Brown SparePin 6 Red FridgePin 7 Black Earth Return (for pin 6).Package List:1 x 7-Pin Connector1 x Bottom Cover1 x Gasket1 Pack of Mounting Screws7 x Buckle 2 x Cable Tie 1 x Cable