1989 fleetwood jamboree E-350 Solenoid electrical issue

Does Fleetwood still have electrical schematics available for something that old? We have a 2007 Itasca, and they've got schematics - they even have a physical schematic, which was helpful recently when I had to drill holes to install a larger fire extinguisher; I was able to confirm that the holes would be below the routing of some wiring.