the inspiration

baseplate adaptation sorted thanks to
http://www.rogueengineering.com/Merc..._Code=E46M3MIR
baseplates marked up

ground bases

outline of new mirror base (green area needs cutting away)

2 holes drilled in door

aftermarket module instructions

my car has no memory seats so needed white backed armrest switch which has 2 sockets in the back with an additional pin for the autofold button (see wiring diagram) its a straight swap with the original

new wires passing into door

......taped to screwdriver and pulled through

video of mirror hooked up to armrest switch and aftermarket module

wiring diagram

final result
