aight look i have wires already ran to run my subs but when i connected all the wires nottin! the amp wont even turned on. so asumming it was the amp i went to best buy got it checked out n dey said it was fine so i thought it was my wires so i ran new wires but still not amp turn on! wut could it be? i got the stero head checked out too dey said it is fine! help plz!