Most of the manuals are for individual systems and components, e.g. fridge, water heater, pump, tvs, a/c, engine, transmission, etc. You get those manuals from the companies that make them. If the Tradewinds specific owner info is anything like that which came with my 2002 Dolphin LX, it is probably 6-10 pages long and deals mostly with a few dashboard switches and winterizing procedures.
You might inquire in the National RV forum on this site - maybe another Tradewinds owner can help you out.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL