Listed below are some basic 12N and 12S type wiring diagrams that will help in . The contents are believed correct at the time of publication. It is based on current UK practice, and on the relevant British and international standards. N type plugs are used for road lighting only.
This is currently the most popular plug used for towing as it does the lighting on most trailers and caravans.

This is slowly being replaced by the European pin plug and will become less popular as the reverse light is introduced to new trailers .
Pin locations are from rear of socket.
N electrical kits (socket with black cover) are used for operating the standard lights on the rear of trailers etc. Wiring Diagrams for pin euro trailer and caravan plugs and sockets including road lights, reverse and supplementary power supplies.






