Use this adapter to make your installation of a subwoofer bass amplifier to the factory system faster with a cleaner install. Use this plug and play adapter so you don't have to cut or splice into the factory wiring. Provides RCA output and a power wire for the remote amplifier turn on connection. Adjustable gain output. Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Connection is done at back of radio. No Factory external amp (no JBL, Bose, etc)- Compatible Vehicles: Made for Toyota: Made for 2017-2020 Toyota 86, 1988 - 2017 4-Runner, 1987 - 2017 Camry, 1986 - 2006 Celica, 1987 - 2019 Corolla, 1 2007 - 2014 FJ Cruiser, 2001 - 2016 Highlander,2001 - 2018 Prius, 1996 - 2016 RAV4, 2001 - 2016 Sequoia, 1998 - 2016 Sienna, 1995-2019 Tacoma, 2000 - 2019 Tundra, 1987 - 1990 Van, 2009 - 2015 Venza, 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Yaris