Battery, starter motor, sparks, oh my

So the other day, my car would not start, and lo, the clamp on the negative terminal had snapped (Update - it didn't snap. It fracking melted. I just looked at the old clamp.). I got a new clamp, and that's not the problem. The problem is I can't connect it. When I touch the cable to the terminal, there are sparks,… » 3/16/14 6:01pm 3/16/14 6:01pm