So let me do a check of some things?
You've lost most all the outside lights, clearance, marker ,left and right turn signals, a center brake lamp and also the license plate light?
I get some idea of that looking at this drawing for the Freightliner chassis:
http://www.winnebagoind.com/diagram/1998/126578.pdf
Going down to page four, the right hand section shows a bunch of lights as well as a trailer connection and they seem to have a lot of them strung together on two wires -14 gauge purple (pur) and green (grn) with grn being the ground.
So if all those are out, I might first look at an easy place like the trailer connection and test for both ground on the green point and battery on the purple at all places on that connection. Probably a big flip open cover under the backside? If those are all dead, I would then have to double down on searching out another fuse/breaker location.
Not a full answer for sure but a place to start?
Looked at the one down by the drivers left foot as a possible?
Linear Mode
