Your electrical drawings are here:
https://www.winnebago.com/Files/File...ire_141293.pdf
I sorted a few that might be an early lead to check, if you've not got there yet. One is the power switch on the dash to change from coach power to chassis battery power. maybe checking it?
Second is a fuse /breaker if you have the Ford chassis, this might give a location to check. Second picture is which fuse, third picture is where the fuse block might be?
Click these to get a better view or go to drawings? Maybe some help there?
__________________
Richard
Why no RV year, make and floorplan on MY signature as we suggest for others?
I currently DO NOT have one!