Oh, WOW, just got to a Starbucks in Seattle so have wifi and am overwhelmed with all the great suggestions. If I were home, would make a manual out of all this information. But if I were home, wouldn't be . . . well you know what I mean.
To update you on everything: The last two days at Camano Island were wet and dreary. The lowest I got was 11.6. The camp host/mechanic insisted I could plug into the Tahoe and I did . The first morning, the Tahoe started immediately. The second morning, it also started immediately. Could that be because it's a hybrid?
Drove to an RV park in Everett, WA and stayed there two nights. Needed, of course, to charge the batteries but also really needed to de-stress from the solar issues and then the propane issue. In other words, to charge my own batteries!
Searched over the weekend for someone to install my propane controller. No luck. There was an RV place next to the RV park but they wanted $206 and that just seemed too high and wasn't comfortable with the communication. Went out this morning to get ready to leave the park, checked the tanks and the gauge was showing green on both sides. I'm glad I have Karen to attest to the fact that the right side really WAS consistently showing red and that, after switching tanks, it remained red. (I AM a bit insecure in my diagnostic powers)
Went to Poulsbo RV and they had a dual tank controller but since it wasn't the same, and since both sides again were showing green, decided to just hold off. Did it fix itself? Is it a temporary fix? Who knows, but at least I have propane and can physically switch the tanks if needed. Oh . . . bought some strips at Poulsbo that stick to the banks and read the temp of the tanks to let you know how full or empty they are. They were inexpensive so if they don't work, no biggy.
Though I was planning on staying in the Seattle area for a month, will be heading south in a week for more sun. The logistics of getting to a flight to Cleveland for Thanksgiving and to NYC for Christmas are not settled but I am just going to figure that out as I go.
Wish I could thank you all individually but have limited time on wifi. But I sincerely thank you for your info and your support.
Thank you, Donna!