Plastic trailer socket, 12V, 13 pin, with gasket and fixing screws. More recently found on towbar electrics , the 13 pin socket can combine black 12N lightning socket and grey 12S supplemental power sockets. Benefits include: waterproof when connected, connections are electro-plated helping corrosion resistance, coupled by a positive twist lock and each pin can carry up to 25 Amps.
