Add an Amp Adapter. Use this adapter to make your installation of an amplifier to the factory system faster with a cleaner install. For adding a bass amp for woofer/subwoofer. Adjustable gain output. Prevents cutting factory wiring. Provides rca output and a power wire for the remote amplifier turn on connection. Compatibility Notes: Not compatible with factory external amp stereo systems. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Connection is done at back of radio. Works with the following vehicles: No external factory amp vehicles: Chrysler: 2011-2014 200, 2008-2010 300, 2008-2009 Aspen, 2007-2010 Sebring, 2008-2017 Town & Country;; Dodge: 2008-2014 Avenger, 2009-2012 Caliber, 2008-2020 Caravan and Grand Caravan, 2008-2014 Challenger, 2008-2010 Charger, 2008-2011 Dakota, 2008-2013 Durango, 2009-2010 Journey, 2008-2009 Magnum, 2007-2011 Nitro, 2009-2011 Ram 1500, 2010-2011 Ram 2500/3500, 2011-2012 Ram Chassis Cab 4500/5500;; Jeep:2008-2010 Commander, 2009-2017 Compass, 2008-2013 Grand Cherokee, 2008-2012 Liberty, 2009-2017 Patriot, 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Wrangler;; Mitsubishi: 2008-2009 Raider;; Ram: 2012 1500/2500/3500, 2012 Chassis Cab 3500/4500/5500, 2012-2015 C/V Tradesman;; VW: 2009-2013 Routan