I installed my amp last night its some p.o.s. 400w amp. I did everything right but i go to the car in the morning and the battery is dead. I think i may have short circuited the alt a few months ago tho. Im jus curious on how to fix the problem. By the way the amp powered up but i got nothing from the subs. I got a jump and I disconnected all the wires from the amp and stuffed them in a corner of the trunk and it died again later in the day. Anyone know whats wrong?