[Richard]

This is still a brain tease.

Over the years I have learned to assume nothing.

Would you humor me, and post pictures of your 12v pump and of your 120v pump?

I am asking because of the picture you posted above of your pressure control switch. Both the 12V pump and the 120V pump have their own pressure switches. If you pulled the cover off the 12V pressure switch, your readings would make perfect sense. Is the picture you posted an actual picture of YOUR switch, or of an internet photo? Because another clue would be the gauge of the wires connected to the switch.

This obviously is a pic of a well pump switch.    

And this is a pic of a crusty relay box that is associated with the HWH leveling system. Newell used it to take the 12V signal from the HWH and bypass the 120V well pump switch. Do you have one of these boxes?    

I am thinking one of two things. The 120V pump wiring was fouled up during the generator work(likely)or you may be possibly confused on which pump is which ( not likely).