Use this adapter to make your installation of a 4 channel 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 2 pair stereo RCA output. Adjustable 4 channel gain output. Retains fader and balance. Use to add a 2/4/5/6 channel amp to power the vehicle speakers. Connection is done at back of radio. Bare speaker wires on this adapter to connect factory speakers to the new amp- won't require looking for or cutting of factory speaker wires. The speaker wire is already cut on this adapter so you can connect speaker wires to it to run to the new amp- once this adapter is connected the factory speakers will need to be connected to an aftermarket amplifier for the system to work. Easy to put back to stock. Just remove this adapter and it goes back to stock system. Adapter shrink tubed for durability. Amplifier turn on wire from the ignition power wire connection is included. Compatibility Notes: Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (No Bose, Monsoon, etc.). No factory external amp vehicles only. Connecting this adapter to the factory wiring will disconnect the vehicle speakers from the radio- required adding amp for speakers to work. Compatible vehicles: Made for Kia: No factory external amp vehicles: 2014-2016 Forte/Forte 5, 2017-2018 Forte/Forte 5 (No 7 inch touchscreen), 2011-2016 Optima, 2017-2018 Optima (No 7 inch touchscreen), 2012-2017 Rio/Rio 5, 2015-2016 Sedona, 2014-2016 Sorento, 2017-2018 Sorento (No 7 inch touchscreen), 2012-2016 Soul, Made for 2011-2016 Sportage, 2017-2019 Sportage (No 7 inch touchscreen) Use this adapter to make your installation of a 4 channel 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 2 pair stereo RCA output. Adjustable 4 channel gain output. Retains fader and balance. Use to add a 2/4/5/6 channel amp to power the vehicle speakers. Connection is done at back of radio. Bare speaker wires on this adapter to connect factory speakers to the new amp- won't require looking for or cutting of factory speaker wires. The speaker wire is already cut on this adapter so you can connect speaker wires to it to run to the new amp- once this adapter is connected the factory speakers will need to be connected to an aftermarket amplifier for the system to work. Easy to put back to stock. Just remove this adapter and it goes back to stock system. Adapter shrink tubed for durability. Amplifier turn on wire from the ignition power wire connection is included. Compatibility Notes: Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (No Bose, Monsoon, etc.). No factory external amp vehicles only. Connecting this adapter to the factory wiring will disconnect the vehicle speakers from the radio- required adding amp for speakers to work. Compatible vehicles: Made for Kia: No factory external amp vehicles: 2014-2016 Forte/Forte 5, 2017-2018 Forte/Forte 5 (No 7 inch touchscreen), 2011-2016 Optima, 2017-2018 Optima (No 7 inch touchscreen), 2012-2017 Rio/Rio 5, 2015-2016 Sedona, 2014-2016 Sorento, 2017-2018 Sorento (No 7 inch touchscreen), 2012-2016 Soul, Made for 2011-2016 Sportage, 2017-2019 Sportage (No 7 inch touchscreen)