4 Channel Add an Amp Amplifier Adapter to Factory Car Stereo Radio- Made for Some Mazda: 2004-2018 Mazda3, 2001-2020 Miata +More- No Factory External Amp

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 and a power wire for the remote amplifier turn on connection. Adjustable 4 channel gain output. Retains fader and balance. Bare speaker wires on this adapter to connect factory speakers to the new amp. Connecting this adapter to the factory wiring will disconnect the vehicle speakers from the radio- requires adding amp for speakers to work. VERY IMPORTANT----PLEASE READ BEFORE PURCHASE---- Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (no Bose, Sony, etc.). No external factory amp. Connection is done at back of radio unless specified below. Some years don't connect behind the radio- some connect at the radio tuner usually located at the passenger kick panel or behind the glovebox area. Make sure you can find it before purchase. Compatible vehicles: No factory external amp vehicles: Made for Mazda: 2001-2002 626, 2016-2021 CX-3 (at kick panel), 2013-2015 CX-5, 2017-2020 CX-5 (at kick panel), 2007-2012 CX-7, 2007-2015 CX-9, 2011-2014 Mazda2, 2004-2018 Mazda3 (2014-2018 at kick panel), 2006-2015 Mazda5, 2003-2021 Mazda6 (2014-2021 at kick panel), 2003-2006 MPV, 2001-2020 Miata (2016-2020 at kick panel), 2001-2004 Protege, 2002-2006 Tribute, 2004-2011 RX-8