We have a 2016 Sanibel 3601. The inverter for the refrigerator is made by Magnum Energy. Model number CSW1012, Puse Sine Wave Inverter. We still have not found the location of it, assuming it may be behind the cover panel in the belly storage compartment. There is also a transfer switch, Magnum Energy model CSW-TS15, and of course the Remote Switch in the main control panel, Magnum Energy model CSW-RS. If this isn't the info you needed, let us know.
2016 Sanibel 3601
2015 Ram 3500 Laramie Longhorn Dually
2015 campaing days: 20