Automotive Head units pinouts  > Audi pinouts

Abbreviations of head unit pinout

Pin
Notation
Pin function

Power pins

+ Battery+  (12V direct from Battery). 
- Ground
 ACC Ignition powered. +12 V with the ignition key is in the ACC or ON position.
ANT.CON. Power for Electric Antenna. Output +12 V (maximum 150 - 300mA) 
MUTE This pin is used to silence the audio, earthed by some other external components that is connected to the radio.

Audio pins

RF Front right audio out
LF Front left audio out
RR Rear right audio out
RL Rear left audio out
FR-, RF-, FL-, LF-, RR-, LR-, RL- The corresponding audio ground
LINE Audio line out

Misc. pins

CAN-L, CAN-H CAN bus
CD-IN L+, CD-IN L-, CD-IN R+, CD-IN R- CD-changer audio

 


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