Another daily drive through the countryside. When I'd get to a stop, there was a horrible loud rattling that sounded like the transmission wanted to fall out...amazingly loud. As I drove along and pondered what could possibly have gotten loose (I've owned many Harleys so I'm familiar with V Twins shaking everything apart), I suspected the cause and was proven correct once back in my garage...the fuse box had loosened itself up. Tightened two of the three thumb screws and the horrid rattling went away.