Head unit pinout abbreviations
| Pin Notation | Pin function | 
|---|---|
| Power pins | |
| KL.30 | Battery+ (12V direct from Battery). | 
| GND, GROUND | Chassis Ground | 
| KL.15 | Ignition powered. +12 V with the ignition key is in the ACC or ON position. | 
| lightbulb image | Backlight adjustment | 
| __/ +--- | Switched power out | 
| 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 | |
| strikeout speaker | This pin is used to silence the audio, earthed by some other external components that is connected to the radio. | 
| SCV | Speed control volume | 




 correct
correct incorrect
incorrect