The GADLANE 13 pin to 7 Pin Towing Adaptor allows connection of a trailer fitted with a single 7-pin plug, to a tow bar fitted with a 13-pin socket. Simply plug in and go! These 13 to 7 pin plugs are suitable for European standard trailers. It establishes a secure connection between your vehicle and the additional trailer, transferring the electronic signal lights from the vehicle to the trailer. The plastic housing prevents rusting, and a sprung locking flap protects the connections when not in use and locks in the 7-pin plug when in use.