You still have the factory amp in your car, and the cd player has its own internal amp. You have too bypass the factory amp. I just got a bunch of speaker wire and wired up each speaker to the head unit. Its a pain but it has to be done. I had the same exact prob you do, all power, but no sound.
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89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.
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