1 - 20-Pin ConnectorT20p

Fig 1: 20-Pin Connector -T20b-

Courtesy of AUDI OF AMERICA, LLC

9 -  Rearview Camera -R189- power supply

10 -  Terminal 30

11 -  CAN bus low, instrument cluster

12 -  CAN bus high, instrument cluster

19 -  Terminal 31 to the Rearview Camera -R189-

20 -  Terminal 31