Adapter for a 12N 7 pin socket on the vehicle to an ISO 13 pin Euro connector on the trailer. A 7 pin to 13 pin adaptor is used when you have a towbar fitted with 7 pin electrics but need to use a cycle carrier or a caravan that has a 13 pin power plug. Please note that this will provide road light functions only. It won’t provide power to the reverse light, or any charging functions on a caravan as they are not included in the 7 pin socket on your car.