Who do you turn to ?

One of the best is RVUpgrades.com They are located in Eastlake, OH and owned by a fellow RV'r. Great selection of all things RV, great pricing and outstanding service.

You can still go to both of those places for parts and accesories if you have a coach with a gas engine. For house items your wife will be able to accessorize the coach from the same stores she uses for your stick home. Most items for house modifications can be found at Home Depot and Lowes, walk in or order online. When you get down to RV specific items, then the internet is full of suppliers that have very competitive prices. For a walk-in type store, or online ordering, for RV accessories, Camping World has several locations across the USA and Walmart stores carry a limited line of RV products.