What would cause the battery and brake light to come on for a second or two then go out. This has happened maybe 4 times so far. There is no certain time or anything I can tell that would trigger this. I called myself checking for a loose ground on the alternator. I did have trouble tightening the positive clamp on the battery, I had to bend it a little for it to stay put. There was no way to actually tighten it. Any suggestions?