I'm not totally sure about this since i don't have the BMW iPod kit. I do have the Dice iPod kit though and an ipod classic, my setup doesn't work with it because of the os change. I'm not totally sure though with the BMW kit though.

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'01 Titanium Silver X5 3.0i
Gunmetal Painted Moldings
Cleared Out Headlights
Angel Eyes
Resonator Delete
DICE Hookup/AUX Hookup
White LED Front Turn Signals
AFE Stage 1 Intake