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: Made for Acura: 2001-2003 CL, 2001-2006 MDX, 2002-2006 RSX, 1999-2008 TL;; Made for Honda: 1998-2007 Accord, 2006-2011 Civic (DX trim models only), 1999-2005 Civic, 1999-2006 CRV, 2003-2011 Element, 2001-2006 Insight, 1999-2007 Odyssey, 2003-2008 Pilot, 1999-2001 Prelude, 2005-2008 Ridgeline, 2000-2009 S2000 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: Made for Acura: 2001-2003 CL, 2001-2006 MDX, 2002-2006 RSX, 1999-2008 TL;; Made for Honda: 1998-2007 Accord, 2006-2011 Civic (DX trim models only), 1999-2005 Civic, 1999-2006 CRV, 2003-2011 Element, 2001-2006 Insight, 1999-2007 Odyssey, 2003-2008 Pilot, 1999-2001 Prelude, 2005-2008 Ridgeline, 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 S2000