Harness Connection - Audi A3 (2003-2013) / S3 (2006-2012) / RS3 (2011-2012)

WARNING: If you have 2 amplifiers your rear will not work without this adapter (here)

WARNING: See below how to connect either the Quadlock or ISO harness power. If not connected properly the unit will not turn on.

You must connect the BLUE AMP cable to BLUE AMP-C cable to engage the amplifier