I also verified the connections at the battery selector switch, and the combiner. All are good and tight. The charger too is happy. (at least it gives "happy lights" for the two circuits).

And heck as long as I had the engine compartment open (to follow wires) I did all my normal basic maintenance there too. (water, oil, trans fluids, inspect pumps and belts, look for leaks).

The hardest part was being a contortionist and following wires... ugh.