Abbreviations of head unit pinout
| Pin Notation |
Pin function |
|---|---|
Power pins |
|
| Ub + | Battery+ (12V direct from Battery). |
| GND, GROUND | Chassis Ground |
| S-kont | Ignition powered. +12 V with the ignition key is in the ACC or ON position. |
| MUTE | This pin is used to silence the audio, earthed by some other external components that is connected to the radio. |
| GA | This pin is used in some radio equipment to automatically boost up the volume. It needs the output from the speed sensor. |
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 |
Misc. pins |
|
| DATA IN, DATA OUT | Head unit communication |
| K-BUS | K-line bus |
| SW+B | Battery power switch |
| DATA, CLOCK | Head unit communication |
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