Caravan 13 pin plug wiring details

13 Pin Wiring Details

Beware that there is more than one colour scheme but pins 1 to 7 inclusive are colour coded the same in each. The two shown on the right seem to be the most popular at the moment (2008)

Pin	Function	Old colours	New Colours 1	New colours 2
1	LH indicator	Yellow	Yellow	Yellow
2	Rear fog light	Blue	Blue	Blue
3	Common return for pins 1,2 and 4-8	White	White	White
4	RH Indicator	Green	Green	Green
5	RH rear position, + end-outline light, + rear reg. plate	Brown	Brown	Brown
6	Stop lights	Red	Red	Red
7	LH rear position, + end-outline light, + rear reg. plate	Black	Black	Black
8	Reversing light	Orange	Pink	Pink
9	Continuous power supply	Brown / blue	Orange	Purple
10	Power via ignition switch (used to power the fridge & habitation relay)	Brown / red	Grey	Grey
11	Common return for pin 10	White / blue	White / black	Clear
12	Signalling connection to trailer (alarms etc.)	No allocation	White / blue	Buff
13	Common return for pin 9	White / green	White / red	Black / red

13 Pin Wiring Blues - footnote Aug 2006

A couple of our members with new Volkswagen Audi Group (VAG) cars found that their caravan’s fridges did not work whilst towing. The reason for this was that the relevant pins (10 & 11) in the cars’ 13 pin continental sockets were missing. Older VAG cars with 13 pin sockets did not suffer this problem and, so far, the car dealers have been unable to explain the change.

Up to now I am only aware of new VAG cars being affected in this way. I do know that recent Volvos have been fine.

If you have a new car with a 13 pin socket and suspect that all is not well, then contact your dealer for advice. The solution in one case was for the dealer to call in a towbar specialist to sort it out!

13 pin connector from
cable end (old colour scheme)