Plugs into car harness at radio; Powers 4 speakers Length: "Width: "Height. For over 40 years, Scosche has been producing high quality, affordable Car Stereo Dash Kits, Vehicle Wiring Harnesses, Adapters, Interfaces, Amplifier Wiring Kits, Cables and other 12V installation accessories. We know how you feel about your vehicle, so we will not design, engineer or deliver a product that does not meet our extremely high standards. When you purchase a Scosche installation accessory, we have you covered. We offer Lifetime Tech support which means our knowledgeable tech team is available to answer any product questions you may have for as long as you own the product. We are so confident in our product quality that we back all Scosche 12V installation accessories with a Limited Lifetime Warranty.