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A trailer socket (towing socket) provides the electrical connection between the vehicle and a towed trailer, caravan, or bike carrier requiring rear lights. UK and European vehicles use 7-pin (N-type) or 13-pin (ISO 11446) sockets. The 7-pin socket provides basic lighting functions, while the 13-pin socket also supplies a 12V supply for interior caravan power, fridge circuits, and reverse light. Sockets corrode, crack, and suffer pin damage from repeated connection cycles. Replacement is a straightforward DIY job requiring basic wiring knowledge. At CarParts247 we stock 7-pin, 13-pin, and combined sockets with wiring looms for direct-fit applications.
Choosing the correct socket type depends on what you will tow and the wiring already installed in your vehicle.
Incorrect wiring risks blown fuses, damage to the vehicle's ECU, and lighting failures when towing.
Commonly searched OE numbers fitting Trailer Socket from the TecDoc catalogue.