This is the one I'm using. But looking at it now it might be viewing the voltage at the AUX battery. I'm not sure.
Ford enhanced add-on.
Ford, Lincoln, Mercury -> Body control module -> Vehicle Battery B Voltage
Well I just found something that I REALLY miss from my 2011 F150. On that truck you can left the rear seat and there were hooks underneath. They are perfect for hooking the handle of grocery bags to keep them from rolling around. Never had a problem.
I even had these S hooks that I'd use to...