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. 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. Compatible vehicles: No external factory amp: Made for Chrysler: 2015-2017 200, 2017-2020 Pacific;; Made for Dodge: 2013-2016 Dart, 2014-2020 Durango;; Made for Fiat: 2016-2019 500 (no L, no X models), 2014-2020 500L , 2016-2022 500X;; Made for Jeep: 2014-2018 Cherokee, 2018-2020 Compass, 2015-2020 Renegade, 2019-2022 Wrangler ;; Ram: 2013-2022 Ram Truck, 2014-2021 Promaster (not compatible with 2014-2016 radio delete or am/fm only models), 2015-2020 Promaster City