I have on a 2001 Mountainaire not sure what year yours is (should complete your signature for best reply info.
Basically all you need is a power source a proper fuse link and a ground location. Finding those an running the wire maybe a chore depending on MH.
A splitter may Work if you don't need too many.
My 2016 BayStarSport only has one and I will have to add. Yes it is hard to believe they only put in one. Tire pressure monitor, GPS, aux. braking system, maybe a charger for something called a cell phone and on and on.
A few other head shakers in mine but. Overall we think it is fine.
2016 Bay Star Sport downsize from 2001 MountainAire
Toad GMC Terrain, might leave it home on some trips.