Head unit pinout abbreviations meaning
| Pin Notation |
Pin function |
|---|---|
Power pins |
|
| BAT | Battery+ (12V direct from Battery). |
| GND, GROUND | Chassis Ground |
| ACC | Ignition powered. +12 V with the ignition key is in the ACC or ON position. |
| ILL | Backlight adjustment |
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- | The corresponding speaker ground |
Misc. pins |
|
| MUTE, Mut, mu, TEL, TEL MUTE | This pin is used to silence the audio, earthed by some other external components that is connected to the radio. |
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