Weird HVAC problem **evolved to electrical nightmare?

[StereoInstaller1]

did this real quick before i left for work this morning, 85 was ground full time.



i will try this once im home from work. which one is the unloader wire?

The unloader relays run ONLY 2 things: windows and HVAC fans.

The wire to the starter lug is green/black, should have a ground when not cranking.

[Rose E30]

This might help:

http://wedophones.com/BMWManualsLead.htm