How to Wire an Aftermarket Stereo to a Factory Audi Amplifier - YouTube
Enabling rear speaker / amplifier for aftermarket head unit (2010 A3 8P) - AudiWorld Forums
Audi area: Audi A3.
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2014 S4 Non B&O Aftermarket Subwoofer and Amp Install - AudiWorld Forums
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Audi A3 – Custom Stealth Audio System Install | The Sauce
8L] Nokia Subwoofer - need 14pin connector wiring scheme - HiFi, Car-Alarm und Elektrik (8L) - A3-Freunde
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