I was thinking of dissabling the alternator via a manual switch to help reduce load on the engine on short trips (everyday, i drive 3 miles to work). I proved that the car would run for at least 20 minutes last week. My alternator died and I continued to drive the car around town. The battery went down to about 11 volts by the time I got home. I charged it up and all was fine. Of course, I would replace my starting battery with a deep cycle battery to ensure I don't reduce the life of my starter battery. Then I could charge the car each night at home. I thought someone had tried this already. My problem is I don't know what wires to intercept on the alternator. My alternator has a large red wire (positive from the starter) and 2 small wires going into it. The two small wires are on the same plug. I am assuming one of them controls when the alternator is charging and when it isn't. I drive a 96 Saturn SC2. Anyone know the answer to this?