Great Caravan Trailer Plug Wiring Diagram

Only the blue brake and white ground wires are different.

Caravan trailer plug wiring diagram. This is the standard uk wiring of a the supplementary socket and plug otherwise known as 12s. In the uk trailer lights are normallly connected using a 7 pin plug and socket known as a type 12n. 12n 7pin trailer caravan lighting wiring diagram this is the standard uk wiring of a the normal socket and plug otherwise known as 12n.

The diagram below shows the view from outside the vehicle socket under the flap and from inside the trailer or caravan plug. The earth return is also a more recent addition as it used to be spare but since caravan fridges have got larger it was necessary to provide a. Typical trailer wiring diagram and schematic.

There have been slight variations over the years as most newer caravans control the battery charging in the caravan rather than from the towing vehicle. These 2 wire diagrams fit the needs of most trailers. Trailer plug wiring diagrams use the correct size cable for the plug socket most standard plugs will accept up to a 4mm auto cable easily.

For more help please call 0330 333 1525. If you look at a socket or plug you should be able to see the pin lables 1 7. Below is a diagram for the original plug and socket showing the functions of each pin.

The 7 pin n type plug and socket is still the most common connector for towing. If you have a 13 pin socket fitted to your vehicle. The 7 pin flat plug will fit into a 12 pin flat socket and work perfectly.

This has now been replaced by 13 pin euro plugs on all new caravans. All diagrams are as viewed from the cable side. All diagrams are as viewed from the cable side.