I see this as being slightly different due to the way it is labeled in drawings at different points.
The parts drawing is and interactive deal which we can use to look for parts and ID them
Click this snip for better view!
from this, I see it as being part of a feature code/ option 401 . I would infer that option 401 is an inverter option?
Info from this set of drawings:
https://catalog3d.winnebagoind.com/menu/Parts.htm
Drilling down to this set for the chassis drawings:
https://www.winnieowners.com/forums/...2&d=1707094891
Then I looked at the chassis electrical drawings for more indepth info and go this:
I read it again as option 401 and it is marked as inverter! They use a "code" for battery cables to help sort where each might go! The code is marked on the battery cables as tape near the ends, using this ID chart? But inverter is a somewhat "newish
" thing and this chart doesn't show the orange color, even though it may/may not be marked on your cables?
If you have a page or two of the build sheet that lists the options for your specific RV as built, you may spot an option 401 that will tell you more about it?
But until finding different, I would go with this feeding to/from the inverter!
One way to check , even without meters to test is to put a small gauge wire across the gap of the fuse and see if the inverter jumps into operation!
Be aware that this has some hazard as the wire being too small may mean it draws too much current and the wire heats way too fast.
I recommend NOT holding it with fingers but just long enough to test that the inverter is now working.
Small wire may heat too fast but using too big may let some failure like a dead short in the inverter draw enough current to be a hazard!
I tend to lean toward letting it get hot rather than risk doing real damage on further into the RV!!!!
I recommend NIETHER for long term!
Small point on the way things are done at different times? Winnebago has had different names, done by different folks at different times. One of those is the name of the converter and inverter. Normal is a converter uses 110aC to make 12VDC, Charger is sometimes the same thing!
Inverter is the gizmo which uses 12VDC battery to make 110AC or just the opposite of converters!
First we had converters and then they started adding stand alone items as inverters. Gradually they moved to converters with inverters built in and called them different names like converter, converter inverter or at times they really messed with our mind and called them simply inverter, even though they had a charging function which we would have called a converter!
Kinda/sorta the same field but different names?