My car eats batteries. Used to have a boom box system in it before I bought the car and removed the box. Left the wires unconnected in the back so they go nowhere and hang loosely. I read somewhere that alternators on the 89's can be responsible for the drain. True? I have underdrive pullies and do not drive the car much but battery can go dead in a week. There arer huge fuses under the hood to power this elaborate soundsystem. New soundsystem comprises American Thunder flowmasters. Opinions on the cause for the drain?