A 1990 Chrysler Dynasty has an electrical problem that keeps discharging the battery when the car sits for several days. Checking indicates that with everything turned off about one half amp is beith drawn from the battery. After removing the rear window defroster fuse from the fuse box on the left inner fender, the draw is only a few milliamps which I assume is power for the computer, and the battery does not go dead. Removing the rear window defroster fuse also disables the radio, clock and interior lights. Another mechanic told me this happened to another Dynasty and the only way he could prvent battery discharge was to remove the same fuse. Does anyone know what causes the problem and how to fix it?