Ok first you have the hardest TV to set up of any I have dealt with (Several) Congrats on that
.. No matter.
You have a Batwing... The basic batwing is a very good VHF/VHF antenna (yes there are TWO VHF bands) and a fair UHF. Adding the Wingman improves UFH performance. but let's not just yet.
Next we come into the Motor home.. You have one of two switches..
One is a wall plate. it has a 12 volt accessory outlet, (next to useless) a SWITCH (or button) A LED and an antenna jack.. Odds are the antenna jack is connected to your MAIN TV.
The othere box is what we call Da BOMB..(Box of many buttons.proper name Matrix Switch)
If you have the wall plate.. MAKE SURE THE LED IS ON..if it not on then the switch selects CABLE and there is no power to the antenna "Booster"(Mast head amplifier) up above the roof. Then skip next part.
If you have Da BOMB.. Make sure the power switch is ON... And select ANT for all televisons (To make sure you get the right one)
Next: If you have a smart phone Android TV Antenna Helper Free.. Run it, it's all automatic (Search for antenna helper free).
The antenna is broadside to the signal.. that is if the blades point north and south the signal comes from east or west.
Turn it on and hit MENU.. You are on your own from here but Setup up, Source (ANT) and Scan Last one I worked on I got lucky and hit it first try.. But man.. Luck was running high that day. (Shoulda bought a lotto ticket first).
First time I did a VIZO it took me around 10 mintues to find that option.
Finally, this assumes the VIZO is a modern one with ATSC ability (I think most if not all are).
Wingman (Around 30 bucks) brings UHF performance up to level of VHF on the antenna
SENSAR PRO (about 100 bucks) greatly improves both VHF and UFH, adds additional features as well, replaces wall plate if that is what you have or is the only deice I know of that is DESIGNED to go between the Box of Many buttons and the antenna.. WORKS GREAT.