Add an amplifier adapter. Use this adapter to make your installation of an 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. Important compatibility notes: Not compatible with vehicles with the factory external amplified stereo systems. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Connection is done at back of radio. Compatible vehicles: No factory external amp vehicles: Made for Kia: 2014-2016 Forte/Forte 5/Koupe, 2017-2018 Forte/Forte 5/Koupe (No factroy 7 inch touchscreen vehicles), 2011-2016 Optima, 2017-2018 Optima (No factory 7 inch touchscreen vehicles), 2012-2017 Rio/Rio 5, 2015-2016 Sedona, 2014-2016 Sorento, 2017-2018 Sorento (No factory 7 inch touchscreen vehicles), 2012-2016 Soul, Made for 2011-2016 Sportage, 2017-2019 Sportage (No factory 7 inch touchscreen vehicles)