The DEH-P7400MP does not have the ability to use the CD-IB100. If it doesnt want use your ipod with it you need the CD-RB10 it gives your cd player an auxillary input that can be uses for for any audio device.
http://www.crutchfield.com/S-gIAaNK79UFD/p_130CDRB10/Pioneer-CDRB10.html
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