Description: Made of aluminum, durable and can be used for a long time. Non-corroding, shock-resistant design. This standard, 7-pole connector provides a secure connection between your trailer and tow vehicle. Connect the major vehicle and the additional trailer,Transfer the electronic signature from the vehicle to trailer. 7-Pole, Trailer Connector Europe Style,Fit for Car Truck Trailer Caravan Tow Vehicle. Specification: Item Type: Electrical Plug & Sockets Item Name: 7 Pin Aluminum Plug Material: Aluminum and Copper Voltage: 12V Size: Approx 7*7*5cm 7 Pin Lighting Connections - 12 N Black Cable Function PIN 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 (Brake lights) PIN 7 - Black Wire (Left/H Tail & No. Plate Lamp ) Package Includes: 1 Piece 12V 7Pin Trailer Plug Socket Connector(4 Pack) Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.