Ok my cd player and radio work just fine. i can set the presets and everything and they will work, but if i turn the key off for longer than about 3 seconds it wipes all my presets and forgets where i was at on my cd. how do i go about fixing this?
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You must connect the constant hot wire (or there is a fuse blown somewhere).... it should either be orange or yellow at the rear of the pioneer radio ... it should be connected to a wire that recieves power even when the key is off ... that wire will depend on the car itself ... if you used a connector to plug into the factory wires (a good idea) that connecter should have a yellow wire that would supply a constant "hot" for your pioneer, if it doesn't there should be a fuse blown in the car fuse box.
This is normally a problem that happens when the yellow wire on the harness is connected to the wrong voltage source. The yellow wire must be connected to a source that is always supplying 12 volts even with the car turned off. That is the way they keep all memory after the radio has been turned off and the car turned off. Check that the yellow wire has the voltage it needs when the car is off, if it does have that voltage, I can help you further, but this is the most common reason for your problem.
Take the unit out of the dash. In the back of the unit, disconnect/remove the wiring connector. Underneath a little "flap" on the bottom of this connector there is a small red 10V fuse. That fuse had blown, and when I replaced it the CD?radio worked just fine.