Most data bus circuit for BMW X1 E84 facelift (2012-2015)

AMPLIFIER (W/ TOP HIFI) (BEHIND LEFT REAR QUARTERPANEL) CAR INFORMATION COMPUTER CIC (W/ CIC) RADIO (W/O CIC) CD CHANGER COMPUTER DATA LINES SYSTEM DIGITAL TUNER (UNDER FRONT OF LUGGAGE COMPT FLOOR) GRN WIRE MOST-BUS CONNECTOR (LEFT "C" PILLAR) ORG/GRN WIRE TCU/ULF/ ULF-SBX/ ULF-SBX-H W/ ULF-SBX-H W/ TCU, ULF-SBX