Installed this Kenwood eXcelon head system in the TB today, purchased it from Crutchfield as I have used them many times before, I like crutchfeild because they set you up to your vehicle with proper harnesses and interface. In this case its the Crux pictured below that retains all factory functions and chimes, AND (drum roll) the chime volume is totally adjustable, probably one of the best features of the entire system, because I hated how loud the chime was, even on the low volume setting it was WAY to loud!!. Anyways, this system is awesome and interfaces with my Android device for phone, music, CD DVD, internet, pictures, navigation and more then I have even discovered yet.! The install was surprisingly easy, the mic for the phone I mounted in the dash and works great. Also has a USB cord for direct hookup or connecting a flash drive ect. It has backup camera feature which I'll be installing over the weekend.