I went to start my jeep one evening and it would not turn over. A few times in the past I had to jiggle the battery cable. I did this, the jeep still would not turn over. So I left the key turned on and got out and jiggled the wire again, this time the jeep attempted to start, rolled forward at me, hit a building and the battery wire melted in half at the terminal. The clutch safety has obviously been removed. The what do you guys think could have caused this?