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. Adjustable gain output. Provides rca output. Connection is done at the back of the radio or the module in the back of radio area. VERY IMPORTANT----PLEASE READ BEFORE PURCHASE---- Not compatible with factory amplified stereo systems like JBL, Bose, etc. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). No premium system. Compatible vehicles: Made for Jeep: 2019-2020 Cherokee, 2020-2022 Gladiator, 2014-2021 Grand Cherokee; Made for some Dodge Ram: Made for 2023-2024 Ram 1500/2500/3500, 2021-2022 Promaster City