This thread is posted in the "Bighorn" area of the Heartland Owners Forum. The Heartland Bighorn has always been a full sized (mine is 38 feet) 5th wheel RV, so any mention of "ball hitch" either applies to another Heartland towable RV, or is posted in the wrong area.
Reminder to original poster in this thread ( and all threads): To have the other owners out there help you we need to know the specifics of what you are working with - Model RV, Year, tow vehicle (if involved in the question), Brand and model of any subsystems (Lippert, Schwintec, MorRyde, Dometic, Norcold, etc.) you need help with. More info is better, to help you.