I bought a 6 disc cd changer from a member on this board. When I plug it in I get no response (Cartridge does not come out, no display on the radio.) Also the mounting screws that came out of his truck are smaller than the screw holes on my 2003 x5. Is there something different between years on these trucks (As far as the cd changer goes)?

Thanks'
Mark

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2003 X5 4.4 Sport