When i turn up the volume the deck turns off then turns back on

What kind of car do you have the stereo in? It sound exactly like a bad ground wire. To trouble shoot this, simply find a good clean ground point to hook the black wire from the radio to. you can usualy find somewhere behind the dash that the factory has grounded things to. I asked what kind of car, because some fords, and nissans do not have a ground wire in the factory radio harness, even though the adtor harness you may have used will have one. Hope this helps.

Your pushing too much wattage