When installing an aftermarket radio, the 70-8114 will allow the user to retain their factory-installed steering wheel controls without having to splice into factory wiring (Axxess SWC required and sold separately). In addition, we included RCAs to allow the user to retain their factory-installed 3.5mm jack. Aftermarket radio must have an AUX-In. This is an optional harness. The main power harness is still required. For vehicles with a 20-pin connector only Retains factory steering wheel controls Pre-wired for the required Axxess SWC interface (sold separately) RCAs included to retain the factory-installed 3.5mm jack Aftermarket radio must have AUX-In For vehicles with a 28-pin connector, please use the AXSWCH-T28 Vehicle Applications Lexus 2002-2003 Lexus ES300 2004-2006 Lexus ES330 2007-2011 Lexus ES350 2003-2009 Lexus GX470 2004-2006 Lexus RX330 2007-2009 Lexus RX350 2006-2008 Lexus RX400h Scion 2012-2015 Scion iQ 2005-2013 Scion tC 2004-2006 Scion xA 2004-2015 Scion xB 2008-2014 Scion xD Toyota 2003-2013 Toyota 4Runner 2005-2012 Toyota Avalon 2005-2011 Toyota Camry 2009-2013 Toyota Corolla 2007-2014 Toyota FJ Cruiser 2004-2013 Toyota Highlander 2003-2013 Toyota Land Cruiser 2009-2013 Toyota Matrix 2004-2011 Toyota Prius 2005-2011 Toyota RAV4 2003-2013 Toyota Sequoia 2003-2014 Toyota Sienna 2004-2008 Toyota Solara 2005-2012 Toyota Tacoma 2003-2013 Toyota Tundra 2009-2012 Toyota Yaris