If you're talking about a standard mini-jack auxiliary input, you should be able to choose AUX from the available audio sources. The AVIC-D3 also has good iPod support. If you are using an iPod, you will want to use the iPod port.
yea just got the Pioneer AVIC-D3 put into my xb and have not really figured out how to use my mp3 player with it by using aux cord with aux port can i get some help on this please? thanks.

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