Just a FYI but I was told by Thor directly that on my 31W class C the chassis battery is NOT charged by shore power. While it is on most class A coaches they don't set up C coaches that way. As always your situation may be different but I will add a disconnect to the chassis before winter along with one on the coach side too.
Pete and Carolynn Foss from Oxford, MI
2018 Four Winds 31W
1999 Aero Cub F-21 trailer
1977 Tioga 24 foot RV