I started tearing into the wiring harnesses last week and got most of the unwanted stuff removed.
My milestone was, to thin out the harnesses and still have a running engine. As far as i can read, getting it to crank over is important:
The dash works as well. It complains about all the stuff that is not present anymore... i hope i can remove all of these from the configuration of the BCM.
Test scenario:
Quite a bunch of wiring removed, more to go. The dash harness is untouched, the engine compartment harness aswell.
No need to modify the engine harness other than relocating it a bit and maybe i will have to make new power cables because these might not fit as good.