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16 (8+8) pin Car Stereo ISO connector layout
16 (8+8) pin Car Stereo ISO  connector

Head unit pinout abbreviations

Pin
Notation		 Pin function

Power pins
KL.30 Battery+  (12V direct from Battery). 
GND, GROUND Chassis Ground
S Ignition powered. +12 V with the ignition key is in the ACC or ON position.
lightbulb image Backlight adjustment
__/ +--- Switched power out

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- 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.
Pinout status: +2 -0
According to 2 reports in our database (2 positive and 0 negative) the Volkswagen ALPHA 4 pinout should be correct.

Is this pinout
NO DIY devices
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