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Hi Simon, have a look at the wiring diagram on this link, power for reverse should be on pin 8 with pin3 as the earth return for it. I don't think the car electrics charge up the van battery any more, only power to the fridge when engine running about 2000 revs.

Dave

If it is a dealer fit towbar and wiring, are you sure it is wired for caravan use? The car may be fitted with a 13pin socket but could be only wired for road lighting, which would not include 12v power to charge battery, fridge and caravan reversing lights. Dealer did it with my Skoda until I spoke to the fitter (external, he was not told it was for a caravan), he then came to my house and wired up correctly, put on his test board to confirm everything worked.

Cost cop-out really Simon. The wiring for the towing a trailer was pretty easy to fit as they were all lighting wires and generally readily available in the boot. The extra wiring needed for the the rest involve a lot more work/time running a supply to the battery and ignition and costs a lot more to do properly. I had this arguement with my Honda dealer when I said I wanted the whole lot connected for towing a caravan & not just lights.

Dave

The litle tinkers,   They will try it on and see what they can get away with. Silly really coz it's their reputation that they are messing up. Hope it's all sorted in the end with no more inconvenience to you, good job you noticed.

Dave