Wire harness and antenna adapter for installing an aftermarket radio- Wire harness and antenna adapter plugs directly into the car- VERY IMPORTANT- PLEASE READ- Only compatible with standard audio system- not compatible with premium amp system like Bose, JBL, etc. Will not retain some features like steering audio controls, etc- extra adapters required. Compatible with: Mazda: 2010-2012 CX-7 CX7, 2013-2015 CX-9 CX9 - wire harness has an extension cable that lets you plug in the factory radio to adjust the factory clock- without the factory radio the clock can't be adjusted