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How many of the running lights are out? Do you have a 12 VDC test light or small digital multimeter for some testing?
What is the year model so I can look up the wiring diagrams for you?
Give me about 45 minutes and I will be at my computer and can get you those diagrams.......
Winnebago doesn't show those and so you would need to go to Faxon to get a complete chassis manual. I am adding a link to that site for you. http://www.faxonautoliterature.com/