Yes, this would be plug-and-play in your car. I helped a friend of mine do this installation in his 2001 750iL with SES. Your in-car wiring is essentially identical to his. All you need is the 25-pin to 54-pin adapter and the TCU part number listed above. That is it.

Do not use an E90 TCU; that would be incompatible with your car. This TCU, part number 84.10-9 195 455 is described as a "CDMA" TCU. Other units described as "GSM" are for European-markets, I think, and would not be compatible with your car.

__________________
SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input