Help, yesterday I rode about 10 miles (uneventfully) but as I turned into my driveway I heard my starter motor. It apparently had been running the whole 10 miles. I could not stop it by turning the kill switch or the ignition switch. so I disconnected the battery, which did the trick. Then to make sure it did not still have a start signal, I reconnected the battery and every thing looked ok. I didn't try anything else as the starter smelled terrible. Today I tried to start but the battery was dead, completly. So I put it on a trickle charger for the day, but still no charge. Any hints as to what I can check. Thanks ahead of time.