My 2004 has/had the phone in arm rest and module in the rear.

Today I acquired a module from a 2008 BMW.
The unit is physically the same size as L322 unit (unlike the unit all the guides online depict)
I have repinned following one of the guides, however still not functioning.

Mine also has the Voice Module.

Not many of the colours on the guide matched up.

Is there a pinout/wiring diagrams I can look at to see what's what?
Or anyone upgraded before.