The AA3-HAR adapter allows the installer to connect a proper protocol interface adapter or auxiliary input converter to the Audi Symphony II in-dash 6-disc head units that are not pre-wired for a CD changer. In such vehicles, a solid 3-in-1 factory connector blocks access to the CD changer port. The factory connector must be removed to gain access to the CD changer port. The AA3-HAR accepts the factory connector and plugs into the radio, leaving the CD changer port open for proper use of any CD changer interface adapter or auxiliary input converter.
