Below is a video clip of the Auxiliary Audio Input which will allow audio playback of a variety of aftermarket devices. This demonstration is for a Prius which does not have a factory XM tuner installed. The video to the left demonstrates the same Aux Input circuit when it is installed in a Prius which is equipped with the factory XM tuner. The unit is designed to be automatically compatible with all 2004-2005 Prius packages and accessories without loss of function  : )