This is a pic of the switch and wire that melted the battery holder and burnt my hand pretty good. Thought I would post it up so it can be caught by others. I doubt it is an issue on other trucks, but I sure didn't expect it on a new truck straight from the box. You can see the springs on the holder how they melted through the holder.
Imagine trying to hold that...it was hot quick. Look for the gold at the switch...It's a major short. Sorry for bad pics