Normally the short answer would be to use the switch by the door but I'm guessing you tried that, so we may need to look further for some other hangup?
The problem then becomes it is handy to look at the electrical drawings for how those lights get their power but to best do that we need to know exactly which 2018 Minnie you have as there actually are a whole bunch of them for that year and each will differ slightly, so can you spot which model you have?
Or you can find the actual drawings here, if you are inclined to go that way, but many find it a deep ocean to step into if that is not your field.
https://www.winnebago.com/Files/File...ram/Wiring.htm
First steps first, though?
Coach battery switch is on and the batteries are charged/good? Rv batteries have a bad habit of running down while we are not looking!
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Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!