||Try your local library. I'm in a small town, and our library has the Mitchells repair manuals for automotive repairs. I copied the wiring diagram for my 83 Pace Arrow. Use the wiring diagram for the 'Vans, Front Sections, and Hi Cubes' because Fleetwood used the unfinished 'front section' to make the motorhome. I'd send you my pdf wiring diagram, but my 83 is too old and has a carburetor, not fuel injected.
If your library cannot help, let me know and I will get the wiring diagrams for you from ours and send them as pdf files.