OK, I recently bought a 2008 Montana but I am not camping in it I am living in it full time (Like a Tiny House). Unfortunately it did not come with the Owners Manual But I have found them on line.
I will admit that I have only skimmed through the manual and I have looked up a couple of minor issues. What I am needing/wanting is some system schematics. The dealer I bought it from is over a hundred miles from my place and the nearest dealer is over 60. If I had the schematics I could trouble shoot any problems (I have a few) and try too fix
them.