Hi Janice & Michael! Welcome to IRV2! We're glad you found us!
I would suggest you call Fleetwood tech support about the batteries. As for the positive to positive and negative to negative, that would indicate that the batteries are connected in parallel for additional amperage.
Good luck, happy trails, and God bless!
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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD