[Clavurion]

This should be the only difference with halogen and xenon.

Halogen:

Xenon:

Pins 8-11 are not empty: They are for level adjusting motor:

 

[Clavurion]

All post 2004 OEM xenons are bi-xenons.

Like on your original post one possibility is to use halogen high beam supply for bi-xenon shutter activation. So just change the wiring to corresponding pin on headlight connector.

On these pin 1 is parking light (side light) and pin 12 is indicator on both halogen and xenon. (You don't have to care how the headlights are wired internally.)

Leveling motors are the same pins on both halogen and xenon. The only difference in functionality would be that xenon models have leveling sensors and the adjustment is automatic instead of manual adjustment wheel. The motor themselves work just the same.