Abbreviations of head unit pinouts
| Pin Notation  | 
			Pin function | 
|---|---|
			Power pins | 
		|
| Ub | Battery+ (12V direct from Battery). | 
| GND, GROUND | Chassis Ground | 
| A+, ACC, S-K, S-kont, SWA | Ignition powered. +12 V with the ignition key is in the ACC or ON position. | 
| ILL, LAMP, Lume, iLLUM | Backlight illumination | 
| ANT+, P.ANT | Power for Electric Antenna. Output +12 V (maximum 150 - 300mA) | 
| 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 | 
		|
| R | Right audio | 
| L | Left Audio | 
| FR+, RF+ | Front right audio out | 
| FL+,LF+ | Front left audio out | 
| RR+ | Rear right audio out | 
| LR+, RL+ | Rear left audio out | 
| FR-, RF-, FL-, LF-, RR-, LR-, RL- | The corresponding audio ground | 
| GROUND SP | Speakers ground | 
| LINE OUT | Audio line out | 
| LINE IN | Audio line in | 


