7 pin to 13 pin car to trailer conversion adaptor. An adaptor plug to convert from standard 7 pin socket on the car (12N) to 13 pin euro style plug on the trailer or caravan. Simple to use. Fits in seconds. Leisure Mart is a real family run business and was formed in December 2004, we work closely with our suppliers to ensure that all new products are immediately made available and they are supplied to the highest possible standard and of course at the best possible price, in fact through constant price checking we guarantee that our prices will always remain competitive.