Auxiliary audio input interface for Volkswagen, this aux input converter lets you input audio from your iPod iPhone Mp3 satellite radio through your Volkswagen's radio without the need of tapes or fm modulators, This iPod adapters allows you to retrofit your Volkswagen sound system to accept any external audio source with a headphone jack or rca jacks Simply plug one end into the cd changer port behind the audi radio radio run the input cable to your desired location and plug your aux audio device.sound is crystal clear and digital maintains full function of all factory volkswagen features you don't lose anything radio must have Cd or sat buttonIf you need help finding the correct auxiliary interface for your Volkswagene-mailus or 888-2310395 vw input interface