supra8civic

I have a 92 hatch and I just gor jdm gathers cd player, tape player and the 6-disc cd changer. There are two plug in the back of the cd player and the tape player that look like they go together but the wires do not match. I plugged it in to my car and the cd player reads eo2 and sounds like it is a tape player rewinding. And all that you hear is piercing sounds from the speakers, no matter what buttons I press. Please help? Thanks.