Thanks Wolfy
QUOTE="Wolfy, post: 2221025, member: 234798"]
I have a MY21 RLine. For caravans that don't need to recharge large onboard batteries while driving between off-grid sites the VW 13 pin connection is capable enough v do away with the need for a separate Anderson plug. There are 2 separately fused 20A circuits in the tow module, one intended for powering a 3 way fridge (which typically use about 15A) and the other can be used for keeping a breakaway battery charged or low charge rate for a van battery.
Having a <2000kg van with no breakaway required and not knowing any better at the time I had a 7 pin flat plug fitted with my towbar, and now I'm looking to get to the 13pin plug that I believe is just sitting up on the towbar behind the bumper.
As I only tow the van a few times a year I've used a workaround to get power to the van without needing an auto electrician to pull trim and run dedicated cabling for an Anderson plug. I fitted a voltage sensing relay in the battery bay under the driver's floormat with a short lead to a 50A Anderson plug. I can either hide the lead away in the battery box or have it out beside the driver's seat - the battery bay cover has enough of a gap at the rear for the cable to come out. I then run a 6mm/ 50A extension cable through the car and under the tailgate. I separated the fridge power and earth wires from the van trailer plug and they plug into my extension. That easily provides all the power I need for the fridge (3 days of 40C!) and if I needed to charge a breakaway battery I could do that too. But I'd still like to get that 13pin plug available!
I can confirm that the basic VSR works happily with the Touareg charging system and the 6mm extension cable has only a small voltage drop (measured under load by wattmeters)
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