Originally posted here but I thought I'd give it a new thread so it gets displays better on Google

I've had the TCU apart. The TCU Has Black [GSM 1], Blue [GPS-US Only], Violet [GSM 2] and Cream [WDCT/BT] Fakra positions.
Here you can see the GSM/GPRS module, with connections for two antenna.

Cream is the bluetooth.

Since this is an EU model, there is no GPS [blue]



ANT_BT = Bluetooth = Cream Fakra
ANT_GPS = USA only = Blue Fakra
ANT_TEL = Telephone = Wine Fakra (Wine socket)
ANT_EJEC = antenna connection to Eject box = Wine Fakra (Black socket)

Tthere is a T Mobile.de SIM in the module, but it is PIN locked, and the PIN is not 1234 or 0000. The sim must be roaming enabled and BMW is picking up the bills.