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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
Mercedes Benz Audio 10 by Becker (BE3100) p/n A 210 820 09 86; Mercedes Benz Audio 10 by Becker (BE3200) p/n A 208 820 03 86; Mercedes Benz Audio 30 by Becker (BE3307) Mercedes Benz Audio 30 APS (BE4705); Mercedes Benz CD (MF2297) by ALPINE (Japan);Mercedes Benz Truckline CC25 (BE6046)

Head unit pinout abbreviations

Pin
Notation		 Pin function

Power pins
BAT Battery+  (12V direct from Battery). 
GND, GROUND Chassis Ground
ACC Ignition powered. +12 V with the ignition key is in the ACC or ON position.
Lum 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
MUTE 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.
Rem Remote control

 

Pinout status: +1 -0
According to 1 reports in our database (1 positive and 0 negative) the Mercedes-Benz Audio 10 pinout should be correct.

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Mercedes-Benz Audio 10 visual pinout:click to enlarge
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