Mate I wouldn;t bother, I have them and if it means you gotta do all that work to get them then you aint gonna be happy at all.
It's a bit of a pain as mine come on when i'm border line blind to the road then they kick in.
I still haven't found a mk4 owner that can tell me if there is a way of switching the auto wipers off, the manual tell you how to switch them on but not off

I just want to revert back to the old style where you can choose how often they swipe the screen.