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Please click on the attached link for what I think you are looking for. See the "Start Circuit" diagrams. Hope that proves helpful here. Please get back to me if you need more as all follow ups are included in our fee. http://www.gmcws.org/Tech/dsimmons/onan/onan.html#start-circuit-schematic
I thought the only issue was the start relay............no? Those are pretty much the same in most of these. That is one reason the shop manual covers quite a few sets. Did you want more than the starter relay?