F60 mystery solved! Searching for information, I ran across the following GMIII info.
The fuse listing is highly detailed! If I had it months ago it would have been helpful. The table will be added to my X5 maintenance book.
Go here for fuse protected components:
https://knigaproavto.ru/shemy/en/bmw...x-diagram.html
F60 30 AMP General Module (Rear Power Window, Power Door Locks, Power Mirror)
So, now I can limit my F60 amp draw to these components. Suspect number #1 - folding mirrors! They won't stay folded but work. I'll look for replacement microswitches. Next, unplug both mirrors.