High/low bus circuit for Audi A8 D3 (2002-2005)

A/C CONTROL HEAD ABS CONTROL MODULE (BELOW LEFT SIDE OF DASH) INSTRUMENT CLUSTER MOTRONIC ENGINE CONTROL MODULE (IN PLENUM CHAMBER E-BOX) MULTI-FUNCTION STEERING WHEEL CONTROL MODULE (ON RELAY PANEL) NAVIGATION CONTROL MODULE W/ CD ORG/BLK WIRE ORG/BRN WIRE ORG/GRN WIRE ORG/VIO WIRE PARKING AID CONTROL MODULE (BELOW CD CHANGER UNIT, ON LEFT SIDE OF LUGG COMPT) RADIO STEERING ANGLE SENSOR TRANSMISSION CONTROL MODULE (IN PLENUM CHAMBER E-BOX)