Drl

I read all the way to "wire nuts" and ran away. Twist on wire nuts are not to be used anywhere but inside junction boxes. Look inside a clothes dryer or anything that vibrates and you wont find any.
I dont like those scotchlock splice things either. They aren't water tight. The knife blade in them will rust. The worst part is going back in or behind the installer. Where that thing has opened and fell off, try to find which wire has the evidence ( tiny cut in the insulation ) of where it should be.