Metra BY-SWC universal steering wheel control retention interface. Imagine installing a steering wheel control interface and it would automatically know what vehicle it’s in, what radio it’s hooked up to and preset the controls for you…HOW MUCH TIME WOULD THAT SAVE YOU? Now imagine that you only need one interface for every vehicle out there including Chrysler/Dodge/ Jeep vehicles with the CAN Data System. The BY-SWC can decipher the data commands without having to purchase any other interfaces! And just think, that same interface works with the top radio manufacturers like Pioneer, JVC, Kenwood, Alpine, Eclipse, Sony and more – the BY-SWC can do it!