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40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector layout
40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector
at the head unit

Multi-pin connector A, 8-pin, for loudspeaker outputs

Pin Function
1 Rear right loudspeaker, positive
2 Front right loudspeaker, positive
3 Front left loudspeaker, positive
4 Rear left loudspeaker, positive
5 Rear right loudspeaker, negative
6 Front right loudspeaker, negative
7 Front left loudspeaker, negative
8 Rear left loudspeaker, negative

Multi-pin connector A, 8-pin, for voltage supply lines and CAN bus

Pin Function
9 CAN bus, high
10 CAN bus, low
12 Voltage supply, negative, terminal 31
15 Voltage supply, positive, terminal 30
16 Anti-theft coding control signal, SAFE, positive

Multi-pin connector B, 12-pin, for CD changer control and CD audio input signals

Pin Function
1 Audio input left
2 Audio input earth
3 Audio earth, CD
4 Terminal 30, CD
7 Audio input right
8 Audio left, CD
9 Audio right, CD


Multi-pin connector C, 12-pin, for telephone and microphone signals

Pin Function
5  Telephone LF input signal left (-)
6 Telephone LF input signal right (-)
10 Telephone mute
11 Telephone LF input signal left (+)
12 Telephone LF input signal right (+)

 


4-pin USB connector

Pin Function
1  Earth
2 USB D-
3 USB VCC +5V
4 USB D+
4 pin Audi Head Unit shaped  connector layout
4 pin Audi Head Unit shaped  connector
at the head unit
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