7 Pin 24v Trailer Socket Wiring Diagram

You will need twin electrics if you require more power than what a single 7 pin socket can provide on a pre 2008 manufactured uk caravan post 2008 uk caravans are fitted with 13 pin connectors.

7 pin 24v trailer socket wiring diagram. The 7 pin flat plug will fit into a 12 pin flat socket and work perfectly. Rest of pins numbered clockwise or anti clockwise depending on view and whether plug or socket 24s iso 3731 connector. 7 pin ebs trailer wiring diagram. This supplies power to the road lighting of your trailer or caravan.

Vehicles and trailers with 6v systems can use the 7 pin or a 5 pin connector but these are rare today. Small 7 pin round qld identifying. In some cases and more often in europe the trailer light will be connected using a 13 pin plug and socket. If you have a 13 pin socket fitted to your vehicle adaptors to plug in so you can use a normal 7 pin plug are available.

This has now been replaced by 13 pin euro plugs on all new caravans. Heavy trucks that may have 12v systems are usually older vintage vehicles or on non european markets. Since january 1st 2015 all new trailers exceptions apply need to comply to adr38 04 that specifies they have either anti lock brakes abs or an electronic brake system ebs to automatically adjust the brakes. The table and diagram below explains the connections used on a 7 pin setup.

Twin electrics is a 2 plug system which combines the single 7 pin 12n electrics socket with a 12s electrics socket. The 7 pin n type plug and socket is still the most common connector for towing. Use the 7 pin connector anyway see below and just leave out the last 2 wires. If your truck has a built in 7 pin socket but you only need 5 of the pins.

Why is it more reliable. I had one vehicle with a 12 pin socket and a trailer with a 7 pin connector and they played happily for years. Spare trl control pin 1 is closest to key. In the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest.

Below is the wiring diagram for the 24n system click on the picture for an enlargeable image. Pin 7 is center pin. I used a small 7 pin round for 10 years and then after replacing the plug multiple times changed to 7 pin flat for the last 15 years and i have never had a problem with a flat connector. This is an extension of the 7 pin flat.

All diagrams are as viewed from the cable side. 7 pin 24n plugs sockets the 24n wiring system is typically found on larger commercial vehicles running a 24v supply. Exceptions for the 7 pin connector may exist where they may be used for 6v and 24v. Below is a diagram for the original plug and socket showing the functions of each pin.

24n iso 1185 connector.