Most data bus circuit, late production for Audi S6 C6 facelift (2008-2011)

DATA BUS ON BOARD DIAGNOSTIC INTERFACE (ABOVE GLOVE BOX) DIGITAL SOUND SYSTEM CONTROL MODULE (LEFT REAR OF LUGGAGE COMPT) DVD PLAYER, CD CHANGER INFORMATION ELECTRONICS CONTROL MODULE 1 LWL IN LWL OUT NCA WIRE RADIO TV TUNER