Whats strange to me is that the connections that aren't used on the stock mirrors are green (traditionally ground) and brown (traditionally line power or +). The 3 connections used are the blue with various stripes which i am assuming is for the stepper motors for the different functions.
Ill try to take a look at my stock mirror electronics vs the 1M and try to see if it fits. Ill probably also look up the tech drawings to see if theres a part number difference.
So it looks like the electronics themselves can be swapped.
According to part# 5 here:
PN 67137191398 Is for ALL configurations of the mirror and functions. With/Without auto-dip and heating.
For the 1M Mirrors,
67137191398 is the same PN for auto dip, but doesnt say anything about power folding.
67137191402 is what seems to probably be in the mirrors right now.
Doesnt look too awful to do. I might crack open the stock mirrors this weekend. Ill keep everyone updated!