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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

Head unit pinout abbreviations meaning

Pin
Notation
Pin function

Power pins

B+ Battery+  (12V direct from Battery). 
31 Chassis Ground
15 Ignition powered. +12 V with the ignition key is in the ACC or ON position.
 ANT Power for Electric Antenna. Output +12 V (maximum 150 - 300mA) 

Audio pins

FR+ Front right speaker out
FL+ Front left speaker out
RR+ Rear right speaker out
LR+ Rear left speaker out
FR-, RF-, FL-, LF-, RR-, LR-, RL- The corresponding speaker ground

Misc. pins

MUT This pin is used to silence the audio, earthed by some other external components that is connected to the radio.

 

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