I am fairly confident that Hunter Installed a similar device on every boat they made that has AC shore power.
Mine is called "Zinc Saver" and is located behind the AC Breaker panel.
Just follow your main AC - 3 pole breaker's green wire, aft toward the Boats AC Inlet plug.
Look for the space used for your old, Isolator.
If no old Isolator there, there should be space provided,
Hope you have space for 2 of them, but they do make one single unit that is 50 amp or dual 30 amps capacity.
Jim...