Bang & Olufsen Audio System (MMI) connectors (Audi A4 B8)

A. Shina MOST.
B. Multi-pin plug connection, 18-pin (T18b).
C. Multi-pin plug connection, 32-pin (T32h).

1. Entrance.
2. Exit.

1. Microphone input 1 (+) from the microphone unit in the front, roof module "R164" (internal microphone "R74").
2. Microphone input 1 (screen weight) from the microphone unit in front, roof module "R164" (internal microphone "R74").
3. Microphone input 2 (+) of the microphone block in the front, ceiling module "R164" (voice control microphone. "R206") to the calends, week 44/08.
4. LF (+) from preparation for installation of mobile. phone/Japan-Nav (until calendar week 44/08).
6. Right low-frequency input of the external audio source connector "R199" (until calendar week 44/08).
7. Left low-frequency input of the external audio source connector "R199" (until calendar week 44/08).
10. Microphone input 1 (-) from the microphone unit in the front, roof module "R164" (internal microphone "R74").
11. Microphone input 2 (screen mass) microphone block in the front, ceiling module "R164" (voice control microphone. "R206") to the calends, week 44/08.
12. Microphone input 2 (-) of the microphone block in the front, ceiling module "R164" (voice control microphone. "R206") to the calends, week 44/08.
13. LF (+) from preparation for installation of mobile. phone/Japan-Nav (to the calends of week 44/08).
15. Right low-frequency ground signal input of the external audio signal source connector "R199" (to calends, week 44/08).
16. Left low-frequency ground signal input of the external audio signal source connector "R199" (to calends, week 44/08).
17. Diagnostic cable for ring break.

1. Terminal 30.
2. Terminal 31.
3. (+) rear left speaker.
4. (+) rear right speaker.
5. Central mid-high frequency speaker "R158" (+).
6. (+) front left speaker.
7. (+) right speaker terminal.
8. (+) rear left midrange speaker "R105".
9. (+) rear right midrange speaker "R106".
10. Front right low-frequency speaker "R23" (+).
15. (-) rear left speaker.
16. (-) rear right speaker.
17. Central mid-high frequency speaker "R158" (-).
18. (-) left speaker per.
19. (-) right speaker per.
20. (-) rear left midrange speaker "R105".
21. (-) rear right midrange speaker "R106".
22. Front right low-frequency speaker "R23" (-).
23. Front left low-frequency speaker "R21" (+).
25. Subwoofer in the rear. shelf "R157" (+).
28. Front left low-frequency speaker "R21" (-).
30. Subwoofer in the rear. shelf "R157" (-).