OEM iPod kit comprises of an interface to allow direct connection of an iPod to head units. Simply plug the kit together and into the back of the car radio, connect your iPod and that's it! Once fitted, audio from the iPod will output through the original car audio system, with volume controlled by the stereo (or steering wheel stalk controls where fitted). The original car radio disc track seek buttons can also be used to select tracks within the currently selected iPod playlist folder.