Fridge and water heater not working

So we did some work on our Class A Hurricane, removed the propane stove, reworked the cabinet. The porch light and interior overhead light switches did get disconnected, but have since been reconnected. The house battery is reading 100% charged, propane is at 1/4 tank, but plugged into shore power, the fridge, the water heater, stove hood, and the lights won't work on propane or electricity.

We have checked the wiring as far as we can see, and nothing seems amiss, except there are two prong, and 15 prong ends that have no mate, and we are 99.9% sure never have. Could be wrong. Photos hopefully attached, along with the light switch wiring.







Thoughts? And thanks.