I have found that most manufactures are to say the least very uncooperative when it comes to this kind of information. I had a Jayco that I had to rehab the back end do to a water leak and they were great. We now have a Crossroads Zinger and they couldn’t give a crap about customer service. They just refer you back to the dealer who in all actuality probably know just a little more than you do. I say proceed with caution, at Lowe’s in the electric dept they claim to have a non contact voltage sensor you might start there.
There are no wiring diagrams available from the manufacture . Just curious where you want to add the windows? Hopefully it is not in the front. Years ago they put windows in the front but they were prone to a lot of leaks especially while pulling in a rain storm. And with you having a curved front it would be hard to add a flat window.
Also if you do decide to put a window in you will need to remove the inside paneling to expose the frame so you can tie the new window frame into the existing frame. If not the new window will for lack of a better word "flop" around and that will make it very difficult to keep it from leaking. Also you may have to relocate some of the studs to frame in the new window. Not too bad if you have a wood frame but if the frame is aluminum thats another story.
If you are a very handy person with good knowledge framing it can be done but if you are not comfortable with all this requires then it may be best to hire it out.
2005 Cruiser 29CK
2008 GMC 2500hd 4x4
Crew cab Long bed 6.0 gas
4.10 gear ratio