I hope for your sake that I'm wrong, but I would not think that VW Group will include any extra wiring in any of their models, doing that would waste (them) money. Car production volumes are high enough for VW Group to make specific wiring harnesses for each trim level of car.
Now, maybe 50 years ago, Ford UK would include lots of cabling that might not get used, I had a 1972 Ford Escort MK1 van, it didn't have a coolant temperature gauge in its instrument panel, I bought one from a scrap yard that had come from a highish pec'd Ford Escort MK1 car, so that had a temperature gauge in it, just fitted to that van and plugged into the lead that was already there unused.