There is a great guide here:
https://g80.bimmerpost.com/forums/sh...php?p=28446425
but it references slot 29 for constant and 70 for accessory. Problem is that I don't have a fuse in slot 29. I suppose it is empty for a reason. BMW's are quirky and hard to tell what is constant when some of the functions will be supplied power for several minutes even after the car is shut off. I called a BMW dealership for some help and they said they could finish off the install for $150. I have absolutely everything wired except for the fuse taps. So frustrating.