Thanks for the replies. All three were connected to the CD changer.

I have only tried connecting both the Dice and the USA Spec units with the 3 an 6 pin connectors. I believe the 3 pin is power and 6 is sound. Since I had the 6 pin available I have only tried NON DSP units.

I've tried all the modes and can control the iPod in either direct mode or from the head unit and steering wheel. Just no sound. My iPod is old as well, but seems to be functioning as it should. Has the required software update and charges when connected.

I think I'm going to order the DSP version of the USA Spec unit and see what happens.

I just think it's strange that I have the 3 pin, 6 pin AND the DSP coax. Always thought it was two of the three depending on model year.

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2003 X5 4.6is
Titanium/Black