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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
p/n 1T0035680HX, 7N5035686A, 3C0035684, 3C0035684B, 3C0035684C, 3C0035684E, 1T0035680B, 1T0035680C

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
11 Display voltage supply, positive, optional only on the Low radio version
12 Voltage supply, negative, terminal 31
13 Display HS CAN bus low, optional only on the Low radio version, not for Midline
14 Display HS CAN bus high, optional only on the Low radio version, not for Midline
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 Left input AUX signals
2 AUX signal ground
3 CD changer, audio signal ground
4 CD changer, voltage supply, positive, terminal 30, contact continuous power handling greater than 1A, short-term peak power handling 5A
6 CD changer, DATA OUT (data exchange for CD changer control from radio navigation system to CD changer)
7 Right input AUX signals
8 CD changer, left audio channel, CD/L
9 CD changer, right audio channel, CD/R
10 CD changer, control line, switched positive
11 CD changer, DATA IN (data exchange for CD changer control from CD changer to radio navigation system)
12 CD changer, CLOCK (internal check protocol for data flow monitoring)

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

Pin Function
1 Microphone input, negative
2 AUX output, audio, right
3 AUX output, common signal ground
4 Microphone output, minus
5 Left telephone audio input signal, negative
6 Right telephone audio input signal, negative
7 Microphone input, positive
8 AUX output, audio, left
9 Microphone output, positive
10 Telephone mute (radio mute)
11 Left telephone audio input signal, positive
12 Right telephone audio input signal, positive

26-pin Connector

Pin Function
4 Video signals input, RGBS, negative
6 Internal universal cellular telephone preparation, handy detect
7 Internal universal cellular telephone preparation, cradle and description of key functions
8 Internal universal cellular telephone preparation, cradle, antenna diagnosis
9 Video signals input, RGBS, negative
10 Right video signal input NF
11 Video signal input, shielding mass
12 Video signal input, synchronization vertical and horizontal
13 Video signal input, green
19 Internal universal cellular telephone preparation, cradle, negative
20 Internal universal cellular telephone preparation, switched terminal 30
22 Video signal input NF, negative
23 Left video signal input NF
24 Video signals input, RGBS, negative
25 Video signal input, blue
26 Video signal input, red

 


Pin
Notation
Pin function

Power pins

+ Battery+  (12V direct from Battery). 
GND, GROUND Chassis Ground

Audio pins

FR+ or RF+ Front right speaker out
FL+ or LF+ Front left speaker out
RR+ Rear right speaker out
LR+ or  RL+ Rear left speaker out
FR- or RF-, FL- or LF-, RR-, LR- or RL-, SGND The corresponding speaker ground
IN-R, IN-L Audio line out
LINE IN Audio line in

Misc. pins

TEL MUTE This pin is used to silence the audio, earthed by some other external components that is connected to the radio.
CAN-L, CAN-H CAN on board diagnostic bus
CD-IN L+, CD-IN L-, CD-IN R+, CD-IN R-, CL, CH, IH, CDL, CDR CD-changer audio

 

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Volkswagen (2003-2019) RNS-510 Quadlock Car Stereo visual pinout:click to enlarge
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