Hi Guys sorry I'm just replying. Havnt got notifications switched on so didnt realise anyone had replied!
Glad you guys are liking the idea, other places I posted up about it havnt really been interested
Anyway to answer a few questions (from what I know at the moment)
As for wiring, it would be wired directly into the 12V battery with a switch in the dash (as someone mentioned, I'm sure we could find a button or get one made to fit in behind the gearstick)
The Passat does have a heated screen available (dont know why they dont do it in the Golf?!) and others as mentioned by members, obviously no longer just Ford! So there will be some bits and pieces from VAG cars to help wire it up with an OEM look (which is what I want too!)
I think it might have to be fittet somewhere else though (as mentioned if we could get somewhere to do a deal then possibly even cheaped but I'll ask the supplier if he knows anywhere or if they can do it) and I'm sure the auto sensor can be worked in somehow (I want to keep mine!)
As for colour tinting, I'm sure they could do some colour alterations to the glass. I will try and get some more details regarding what they have done previously for the MKV (did a batch for the german market)
Cheers for the interest! Keep it coming!