Find the wiring info for your RV here:
https://www.winnebago.com/Files/File...ram/Wiring.htm
Some ideas on how to work with some of the Winn info may be of use!
If you get into the electrical drawings, there will often be three groups.
One is chassis 12 volt for the things we find on trucks. Really not too much there on most RV but some on clearance lights and a few things. Really lacking for things like horn, starter, etc that make the bulk of chassis wiring. they consider that to be chassis builders stuff!
Two is the coach 12vdc like inside lights, vents fans, water pump and stuff Winnebago adds. On your year before 2010, we get pretty good wire by wire schematics for the wires Winn adds but that also stops where their wiring meets another builders stuff. for wiring details on furnace, frig, steps, etc, we often need to look online for that brand, model, etc for info.
The 110 AC is a separate section for cord and generator output, breakers and micro, etc that use 110, but little/nothing on the generator itself!
When you get down to the wiring question, decide if it is more likely a 12VDc coach like inside lights, then you may need to go to the "installation" section as that gives a drawing of the RV with parts like lights shown on it to let you ID any specific light.
Same with 110AC questions.
Go to the 110AC drawings and locate the part? Sometimes the drawing is a big help on where the wiring comes from, sometimes a terrible mess and little help!
Click these snips from this drawing:
https://www.winnebago.com/Files/File...ire_138211.pdf
Pretty good?
And not so good!
But if you go to the 110 "diagram" it brings more readable info if used to looking at this type. First there are two diagrams, one for 30 Amp RV and another for 50Amp. so choose the correct one and search out the item you want to fix?
Installation may show a path and then the diagram should show what other items or points that path may go through? Kind of like a goofy roadmap? how to get from Chicago to Dallas and want to know what towns along the way?
Another big point that may have been on your RV but maybe not is the way Winn labeled I do small wires. What year did they start?
If you find this code on wires, use this chart to "decode where it comes from and goes to as well as gauge and wire color!
https://www.winnebago.com/Files/File...ical_guide.pdf
Note that when looking at the 12VDC drawings, there will be gauge and color as well as the wiring ID on the map to match with the decoder list and that can be helpful in finding which is battery and ground.
There will be times when you find neither battery nor ground at some plug and knowing which color is which can help to cut the confusion on how to set the meter and where to go!
That's kind of the short course as a starter, so maybe see how it goes and shout back if I can assist.
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