Hi ! Welcome to IRV2! We're sure glad you joined us!
Congrats on the new rig! Owner's manuals are kind of hard to find, and most of them are too generic to be much good anyway. For the various systems in the coach it's usually better to write down the make and model numbers of each individual system and Google for manuals. Of course, this won't help with the alternator question, but hopefully someone will be along that has the same model and can offer advice. Have fun and keep her between the ditches!
Good luck, happy trails, and God bless!
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD