The thread below dates from the time of the E53, but does include attachments to the two DIY articles that are on this site. It may be helpful while you await the specific pin out information.

http://www.xoutpost.com/bmw-sav-foru...-do-i-buy.html

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue