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38 pin Audi Amplifier connector layout
38 pin Audi Amplifier connector
p/n 4H0035465, 4H0035465A, 4H0035465B

Connectors (from left to right): MOST, 32 pin, 38 pin.

32 pin Connector

numbering is from right to left - bottom row first; from right to left - upper row

Pin
Number
Function
1  Digital sound package control unit 2
2   Digital sound package control unit 2
3   Digital sound package control unit 2
4   Digital sound package control unit 2
5   Digital sound package control unit 2
6   Centre left microphone (+)
7   Centre right microphone  (+)
8   Rear left microphone  (+)
9   Microphone unit in front roof module ( internal mi‐
crophone ) (+)
10   Rear right microphone  (+)
11   Screen earth
12   Engine speed signal from engine control unit (+)
13   n/c
14   Digital sound package control unit 2
15   n/c
16,1,18,19,20,21   Digital sound package control unit 2
22   Centre left microphone (-)
23   Centre right microphone (-)
24   Rear left microphone (-)
25 Microphone unit in front roof module - R164- ( internal mi‐
crophone (–)
26 Rear right microphone (-)
27 n/c
28 Engine speed signal from engine control unit (-)
29 Open circuit diagnostic lead
30 Digital sound package control unit 2
31 n/c
32
Digital sound package control unit 2
 

38 pin connector

numbering from right to left - bottom row first; from right to left - upper row (bigger connector)

 from right to left (23 to 30) - bottom row first; from right to left (31-38) - upper row (smaller connector)

Pin
Number
Description
1   Terminal 30
2   Terminal 31
3   Front left mid-range loudspeaker (+)
4   Front right mid-range loudspeaker (+)
5   Rear left mid-range loudspeaker (+)
6   Rear right mid-range loudspeaker (+)
7   Centre loudspeaker (+)
8   Centre loudspeaker 2 (+)
9   Rear left treble loudspeaker 2 (+)
10   Rear right treble loudspeaker 2 (+)
15   Front left mid-range loudspeaker (-)
16   Front right mid-range loudspeaker (-)
17   Rear left mid-range loudspeaker (-)
18   Rear right mid-range loudspeake (-)
19   Centre loudspeaker (-)
20   Centre loudspeaker 2 (-)
21   Rear left treble loudspeaker 2 (-)
22   Rear right treble loudspeaker 2 (-)
23   Front left treble loudspeaker (+)
24   Front right treble loudspeaker (+)
25   Rear left treble loudspeaker (+)
26   Rear right treble loudspeaker (+)
27   Left effect loudspeaker (+)
28   Right effect loudspeaker  (+)
31   Front left treble loudspeaker (-)
32   Front right treble loudspeaker (-)
33

Rear left treble loudspeaker (-)

34   Rear right treble loudspeaker (-)
35   Left effect loudspeaker (-)
36   Right effect loudspeaker (-)
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