Pray everyone was ok, first off....
Damn, that is so heartbreaking to see. It's only natural to picture yourself in a similar predicament...
Makes me glad I've had my instrument cluster out on the bench before and I did all the connections
and such when reinstalling it.
I know all about the ammeter thing on our cars, but mine looked great on the backside, works perfectly
and the wiring is good to it, so I'm not concerned since I don't run anything aftermarket on the car.
Oh - and I don't leave anything "loose", either.
Battery connections don't need to be overly tight to begin with, only clean and snug - and if you have
any strength in your hands/forearms, that cable can be "wrenched" off in an emergency as a result.