I have a 1990 Geo Metro 3cyl. In it is a 15" Juggernaut, a 4500watt Boss amp, 500k cap, 810ca battery, 2ga wire, 50amp alternator. Without the stereo, the alt belt squeals at me constantly. At night I have to make a choice, headlights or radio. I have another battery and didn't know if I could...