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26 (10+8+8) pin ISO 10487 Head Unit / Car Audio connector layout
26 (10+8+8) pin ISO 10487 Head Unit / Car Audio connector
p/n A 003 820 82 86 00 and A 003 820 82 86 (BE1490), A 003 820 82 86 (BE2210), A 003 820 55 86 (BE1650)

Head unit pinout abbreviations

Pin
Notation		 Pin function

Power pins
BATT+ Battery+  (12V direct from Battery). 
GND, GROUND, KL.31 Chassis Ground
ACC+ Ignition powered. +12 V with the ignition key is in the ACC or ON position.
LAMP Light-on signal or backlight adjustment. +12V supplied to light-on pin of head unit when tail lights ar turned on.

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
strikeout speaker This pin is used to silence the audio, earthed by some other external components that is connected to the radio.
GALA This pin is used in some radio equipment to automatically boost up the volume. It needs the output from the speed sensor.

 

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