I see something that will likely be giving you trouble!
First is the way you are reading the sheet numbers as there is actually no sheet 8 on these drawings as they stop at seven!
This is something which we ran across recently on another posting so it is still fresh in mind.
I suspect the problem comes from looking at the page number given on your computer PDF file at the top? If that is correct, that is not the sheet number as built on the drawings, so if you look for a connection on a drawing, always go by the sheet number down in the lower right corner of each sheet!
When looking at page 8 of the PDF file at the top, we are actually on sheet five and then you can get started! In this case the info says this connection meets a plug on sheet five and about where "B" and "4" would cross as if reading a paper map using the numbers and letters at the edge of the drawing.
So to trace the path, you are actually staying on the same sheet but you first need to get on actual sheet five!
Check this snip and see if it helps to clear that point?
Then if you get into some of the larger drawings that cover many pages, think of the m being printed on paper that is too small to hold the full drawing sheet, so the edge labels will run way past the "D" and "8" like on this sheet but think of laying each sheet out in a line so that the number can go on past 8 and as far as they need to cover the full drawing?
The page numbering at the top is just confusion injected when we started using PDF files and computers. Much easier to lay sheets of paper out on the floor side by side if you have the room. When tracing really complex stuff with lots of paths, I have gotten down to having things laid out on the floor and to keep track of how far I had gottten, used things like post-it notes on small rocks to keep track!
A small point to help is the wiring identification chart which has a link on the wiring page but is often overlooked.
https://www.winnebago.com/Files/File...ical_guide.pdf
On page five, you may have noted you have two wires, probably just battery and ground on this circuit but if you wanted to know more about them, the wires should be labeled and the chart tells you the "From" and "to" of that wire!
So on your lights, you can figure out which is battery and which is ground, so that you don't have to trace both paths but just the one which is not showing up there? JC is battery and that can let you go to the breaker panel drawing and find where circuit JC gets power! NC is ground, so don't forget to check it as good.
Hint on speeding up using the wire ID chart!
Bring the chart up and if you want wire XYZ, you will wear fingers out to scroll that far but if you hit "ctrl" and "F" at the same time, it brings a dropdwon with all the places in the chart where XYZ shows and then click on the up down arrows to fry straight through that dropdown list?
Good luck on the bug hunt and hope that clears some things.