Generally (in my 99 and 2012 AF) Northwoods puts a Progress Dynamics charger (usually with Charge Wizard, but not always with the manual controller)
The cut-off switch isolates the batteries, no charging, no noting.
The refer should be set to only run on 12VDC when the engine is running, as it will drain the batteries, quickly. It should also auto switch to AC if the gen-set or shore-power are present.
Generally Northwoods wires the Solar Panels with it's own charge controller. The PD charger will NOT work with the solar.
