I used to own a 1985 BMW 325e (e30) and it may have had the best power windows Ive ever used. Each switch was replaceable, I had an in dash circuit breaker and I liked the switches being in the middle of the car. I have found the wiring schematic for the 4 door system and was wondering if it wouldnt be too annoying to do the swap wiring wise? Figure I can use the switch for the sunroof for a power antenna? Im pretty sure all window motors care about is seeing 12V and I have all the parts to do it already less the wire.