When we had our 2000 Jayco Quest, I sent an email to Jayco directly and requested specific electrical, framing and plumbing schematics. They were very detailed and spot on. From what I was told they didn't sent them out until the unit was at least 5 years old. They were very helpful while we were hanging TV mounts and nails for pictures, etc.
2014 Chevrolet Silverado 2500HD LTZ CC Duramax
2014 Sunset Trail 300BH