Combination relays are suitable for 12S electrics and will charge a caravan leisure battery and/or power the fridge, while the vehicle is running. It also protects the vehicle battery from drain when the engine is turned off.
For the connection of a trailer equipped with a 7 Pin 12N plug to a towing vehicle equipped with a 13 pin socket. To convert a 13 Pin socket into a 12N 7 Pin socket.
Pre-wired 13 Pin socket with 1.5m of 12 core cable, flexible gasket plus three fixing bolts and mounting plate