Head unit pinout abbreviations meaning
| Pin Notation |
Pin function |
|---|---|
| TEL MUTE | This pin is used to silence the audio, earthed by some other external components that is connected to the radio. |
Audio pins |
|
| R | Right speaker out |
| L | Left speaker out |
| RF+ | Front right speaker out |
| LF+ | Front left speaker out |
| RR+ | Rear right speaker out |
| RL+ | Rear left speaker out |
| FR-, RF-, FL-, LF-, RR-, LR-, RL- | The corresponding speaker ground |
| LINE OUT, LINE-OUT LF, LINE-OUT RF | Audio line out |
| LINE IN | Audio line in |
Misc. pins |
|
| CAN-L, CAN-H | CAN bus |
| K-BUS | K-line bus |
| SDA, SCL, MRQ | Head unit communication |
| CDC-IN L+, CDC-IN L-, CDC-IN R+, CDC-IN R- | CD-changer audio |
| RC-IN, RC-GND, /- RC +12V, FB-IN | Remote control |
| DWA-GND |
anti-theft alarm system GND |
KL30 is battery positive, hot at all times
KL31 is battery negative, connected all the time
Audi 8E0 035 192 Q, 8E0 035 192 T
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