Peter at the RV store is Peter Davies. We go there each June for an owners rally. The rally is at Rock Point park in Dunnville and Peter hosts a BBQ for the owners.
Or you could just use a standard 3 way light switch and select your power source manually. Wire the outlet to the common terminal on the switch, normal power feed to one terminal and invertor feed to the other. Be careful to choose an inverter that w...
I had Auto Drain electric valves and they worked great. They attached right to my existing valves with no plumbing required. My valves were standard and not cable operated though.