[FWB]

your right thats what you will need. if all else fails get an appropriate VW wiring diagram and use that to wire it up. you can bet though that some of the same makes have different switches and different steering columns as far as backdrafts go....
i kinda went thru the same thing on my car......wiper motor from a mazda, column from a ford, and a ford multifunction switch.
i ended up buying a mazda wiring diagram and a ford diagram to get them to play nice together. i would recomend a VW diagram for the model the switch is for, just to keep sane.....