Ok, well stock CD player. No aftermarket additions. Rear speakers are NEW oem Ford premium replacements. They went bad one at a time.

I noticed recently that the sound would cut off to all but the front LEFT speaker. It would then come back on all speakers when I pushed the volume button. Now it is off again, just the front LEFT speaker plays...and I connot get the rest to come on. I have wiggled the wires, checked the connections. All go and no results.

Is this concern the Factory amp loosing 3 channels, or the CD player itself?

99 C-SVT. Chris