13 Pin wiring diagram
The purpose of a towbar wiring diagram is to help you understand the wiring requirements for your specific vehicle and to ensure that the towbar is installed correctly. The 13-pin wiring diagram replaced the N and S-type sockets on trailers and caravans across Europe. The advantage is that a 13-pin plug offers you reverse light facilities that the 7-pin cannot.
Below you can see a fitting diagram which shows you the colours and functions of each pin.
| Pin number | Function | Colour UK | Colour Euro |
| 1 | Left turn Signal | Yellow | Black/White |
| 2 | Rear fog lamps | Blue | Blue |
| 3 | Ground for pin 1-8 | White | Brown |
| 4 | Right turn signal | Green | Black/Green |
| 5 | Right tail lamps | Brown | Grey/Red |
| 6 | Stop lamps | Red | Black/Red |
| 7 | Left tail lamps | Black | Grey/Black |
| 8 | Reversing lamps | Pink | Black |
| 9 | +12V permanent live | Orange | Red |
| 10 | +12V ignition live | Grey | Yellow |
| 11 | Ground for pin 10 | White/black | Brown |
| 12 | Not used | Black | Red/Blue |
| 13 | Ground for pin 9 | White/red | Brown |
Since 2008 all caravans in Europe are wired with 13 pin plugs. You can use a 13-pin socket with 7-pin plugs if you have an adapter that splits the electrics. Check out our towbar adapters in case you need one.
Fitting instructions for every vehicle
For every towbar wiring kit installation, we provide you with comprehensive fitting instructions. It is full of information to aid you with the process with step-by-step illustrations and also tells you which vehicle trim panels must be removed.
In case you have any questions during the installation process, you can reach out to our FAQs (Frequently Asked Questions) or the 'Technician Support' helpline. Within every wiring kit, we give our customer service phone number which connects to our multilingual technical website and helpdesk support. This phone number is free of charge.
For more information in general, please read our comprehensive guide about towbar electrics.