It has been a while since I have seen one. If I remember correctly, it has the same plug on both ends. I am pretty sure that the plug on the BT antenna is the exact same as the corresponding plug on the BT antenna connection on the TCU and ULF.

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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