Meaning of Head Unit pinout signals
Pin Notation |
Pin function |
---|---|
Power pins |
|
+Ub | Battery+ (12V direct from Battery). |
GND, GROUND | Chassis Ground |
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-, SGND | The corresponding speaker ground |
Misc. pins |
|
Amp, ATX+, ATX- | Amplifier control |
DATA, CLK | Head unit communication |
Alm |
anti-theft alarm system |
SWC | Steering wheel buttons control |
CAN-L, CAN-H | CAN on board diagnostic bus |