Hi, I have two amps running in my car... - Ones a 444watt Sony Xplod amp and the other is - 1200 Sony xplod amp I have the 444 running my 6x9s and 1200 Running my 2 12" subs. After playing around for a while...My car wouldnt start and I had to jump it...Whats an inexpensive way to fix this?