I am helping my friend wire up his stereo he just got a jvc deck and i put it in for him, it worked now we ran new wires just a better quality wire. Anyways They wored for a while but now when you turn up the volume to any substancial volume the speakers cut out completly and have to turn it off and leave it off for a while for them to work again. Now i checked the wires behind the speakers and the deck to check double for shorts and anything out of the normal as well as the pathways to and from the speakers for shorts and anything possible. What could it possibly be(not getting enouph power from the battery)? Arg i just dont know plz help.