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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
p/n 1K0035198C

16 pin Main Audio Connector 

1 Right rear speaker, positive
2 Right front speaker, positive
3 Left front speaker, positive
4 Left rear speaker, positive
5 Right rear speaker, negative
6 Right front speaker, negative
7 Left front speaker, negative
8 Left rear speaker, negative
9 CAN high
10 CAN low
11 Radio muting (during telephone use)
12 Negative connection, terminal 31
13 Connector for ignition key-controlled switching on and off (S contact)
14 Alarm system terminal (optional)
15 Positive connection, terminal 30
16 Antitheft system control signal, SAFE

12 pin connector C

3 Line out, left
5 Driving directions low frequency (+)
6 Telephone audio signal input, negative
8 Line out, ground
9 Line out, right
11 Navigation language, driving directions, negative
12 Telephone audio signal input,  positive


12 pin B connector

1 Digital satellite radio tuner input, audio left
2 CD changer, left and right port, ground
3 Digital satellite radio tuner input, audio ground
4 CD changer, voltage supply, positive
5 Digital satellite radio tuner input continuous positive, terminal 30
6 CD changer, data out bus (data exchange for CD changer control from radio navigation system to CD changer)
7 Digital satellite radio tuner input, audio right
8 CD changer, left port audio, positive
9 CD changer, right port audio, positive
10 CD Changer, control signal
11 CD changer, data in bus (data exchange for CD changer control from CD changer to radio navigation system)
12 CD changer, clock bus (internal test protocol for monitoring data flow)

18 pin connector

2 Audio signal ground
3 Audio signal ground
4 Shielding ground
5 Video signal ground
6 Video switching signal
7 Video signal ground
8 Video signal ground
9 Video signal ground
11 Audio signal positive, left
12 Audio signal positive, right
13 Shielding ground
14 Synchronization of vertical and horizontal picture signals
15 50 Hertz/60 Hertz
16 Signal input for picture signal blue
17 Signal input for picture signal green
18 Signal input for picture signal red


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Volkswagen (2004-2016) RNS MFD2 Head Unit visual pinout:click to enlarge
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