I think Kim's answer pretty much covers the situation. Additionally, you can often find more specific information for your appliances, etc, including manuals in PDF form, in the support section of the various manufacturers' web sites.
Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.