Adventurer is a brand name for a Class C mini-motorhome and also a truck camper. Not to be confused with the Winnebago Class A model of the same name. I don't know any more about it, though.
The first question would be whether there is space to mount a genset. If there is a compartment designed for one, it may also have the basic wiring in place. Adding a genset is not trivial - you need to plumb in a fuel line (LP or gas?), provide an exhaust outlet, adequate cooling air flow, etc. Most people just carry a portable genset, e.g. a Honda or Yamaha) and use that when needed.