iPod mp3 audio aux input adapter, for factory BMW radios from 1996 and up, most vehicles are prewired for external CD changer or Satellite radio, you can use that connection to add an auxiliary interface creating a new audio source to the BMW radio, By adding the auxiliary adapter to your factory system you can connect any portable source to your stereo, Auxiliary input converters aux are designed to convert this ports of the BMW radios into audio input. Devices such as iPhone iPod, DVDs, Mp3, Bluetooth android, and Satellite Radio can be added to the BMW radio without Fm modulation or transmitters the audio quality is crystal clear this technology maintains full function of all BMW factory controls. If using an iPod interface adapter, the iPod text will be display on the BMW radio and dash cluster, If using an iPhone you can also stream music from Internet services like Pandora, Livio Radio and i Heart Radio If the BMW CD changer is present it needs to be unplug, cables are on the left side of the BMW trunk 3 and 6 pin plugs near the factory amplifier.If you need help finding the correct audio adapter for your BMWe-mailus or 888-2310395BMW iPod adapterBluetooth interface