Welcome to the forum
Having worked on RVs for a minute now, even if it was labeled, it might not be right.
Best way is to either turn everything ON and then pull the first fuse and see what quit. Then pull the next one. Or pull them all out, turn everything ON and put them back in one at a time.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.