They are not just "thoughts", BFL. Observations.
A few tips you can still learn, things that you understand and did before, only in a different way. Try learning at substantial level something completely new and unrelated. Like Spanish. Or if Mex tried learning Cantonese. This is what physics and electricity are for people at this age if they never learned it before.
The saga with your new old MH will likely not end with the fridge light. When you are enjoying what you are doing, you don't want it to end, that's the problem. It's not about "getting there". I envision a few more episodes - portable solar, battery upgrade and/or alternator :)