What is the correct 12v wiring for the car side of a 12S plug for a modern caravan. Fridge and charging?
Answers:
Did you specify to the tow bar fitter whether your caravan was built before or after 1998. They changed the connectors then. The following link should take you to a guide;
http://www.caravanclub.co.uk/nr/rdonlyre.
If it does not work, go to the caravan club website and search for "12S".
Either way, I don't think your pin 6 should be permanently live.
Pin12S (Suplimentary) Wiring for Appliances.
1Reverse Light and/or Reverse Brake System
2Auxillary/Split Battery Charging
3EARTH
4Auxiliary Power from Car Battery
5Warning Light with Common Return
6Refrigerator Power
7Spare
Your car sounds correct, pin is from car battery, and pin 6 fridge needs to be connected or the fridge wont work, this will only use power when connected obviously.
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