There seems to be no standard among units that are built even of the same series Your best bet is to although kind of time consuming is to start thru circuits and fuses one at a time pulling the fuses or shutting of the breakers and find what is affected. On my rig the names on the panel did not match the actual circuit controlled.
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho