OK.
I just spent the last hour or so and added Rear Fog Light capability to my X2 M35i.
It was pretty easy. VERY HAPPY WITH RESULTS!
Found a few articles, but this one was spot on in regards to CODING:
https://f48.bimmerpost.com/forums/sh....php?t=1628029.
Regarding how to make that switch become 'alive', 5 minutes of time.
See attached pictures: