Provides accessory (12-volt 10-amp) Retains R.A.P. (retained accessory power) Provides NAV outputs (parking brake-reverse-and speed sense) Prewired ASWC-1 harness (ASWC-1 sold separately) Retains balance and fade Micro B USB updatable Applications AUDI A3 2006-2013 A4 / RS 4 / S4 2002-2008 A6 2004 allroad 2004-2005 TT 2002-2013