Abbreviations of head unit pinout
| Pin Notation  | 
			Pin function | 
|---|---|
			Power pins | 
		|
| BAT+ | Battery+ (12V direct from Battery). | 
| GND, GROUND | Chassis Ground | 
| ANT | Power for Electric Antenna. Output +12 V (maximum 150 - 300mA) | 
| GAL | This pin is used in some radio equipment to automatically boost up the volume. It needs the output from the speed sensor. | 
			Audio pins | 
		|
| 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 | 


