charlie,,, this is what i found on ebay for a model like mine and i have the exact same setup,,so ya dont have to feel sorry for me after all...
https://www.ebay.com/itm/ONAN-PLUS-6500-GENERATOR-RV-MOTORHOME-GENERATOR-6500-WATT/133557998869?hash=item1f18ad5515:g:1x4AAOSw8vJflzq~