I just bought a brand new head unit for my truck, i hooked all the wires up correctly, everything works, amp,sub,door speakers, radio, but the only thing that wont work is the cd player it wont play any cd's, i put a cd in and it wont play the damn thing, i bought this new head unit because my pioneer wouldnt play cd players either, so obviously theres a problem and im sure my pioneer was just fine but i threw it away:rant: anyone have any ideas?