Update: 1 Apr 2022
Good Day Everyone, thank you all for your suggestions and feedback. I made it to the campground and after testing the solenoids and tracing the voltages, I discovered that a wire on the slide in/out switch had come off, apparently the wire for the slide "out". It was lose and easily came off so I crimped it with pliers so that it would not easily slide off the switch again.
I was just thankful that the fix was so easy. Perhaps I should have started at the switch first 🙂
Thanks again,
Bill