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. Not compatible with factory amplified stereo systems. Only works with factory non-amplified systems (no JBL/Synthesis, Bose, etc.). Most if not all vehicles with NAV might have premium system which this adapter might not work with. Connection is done at the back of the radio. Should also work with some 2022-2025 vehicles not listed. Compatible vehicles: No external factory amp vehicles: Made for Hyundai: 2020-2022 Accent, 2021-2023 Elantra, 2019-2020 Elantra GT, 2020 Kona, 2020 Santa Fe, 2019-2023 Sonata, 2020 Tucson, 2020 Veloster, 2020-2021 Venue; Made for Kia: 2020 Forte, 2021-2023 K5, 2019 Niro, 2020 Optima, 2020-2023 Rio + Rio5, 2019-2021 Sedona, 2020 Sorento, 2020-2021 Soul, 2021-2022 Sportage, 2019-2020 Stinger