Only way to really know is to dig into the guts and look at the converter. More then likely it is located behind the flimsy panels in the large storage compartment under the main bathroom. Just a few ( about 8) screws to take out then panel will come off and you should see ATS ( automatic transfer switch) with power converter close by. Why they stuck under there I don't know why. It should be closer to the battery bank. I have been digging through my voltage to install my solar power system (victron inverter/charger, Lifepo4 battery bank, 800watt solar). So I had to find this power converter and disconnect it from system. Trailer is a 36' 2014 Voltage toyhauler.
FYI mine is a WFCO