I found three different controllers available on line. Without knowing the id number on yours and or a photo, all I can suggest is Googling Intelletec Electronic Climate Controller and the number on the case.
You didn't state why you needed to rebuild or replace yours, but I did see where others were having troubles with their controllers installed in that era Fleetwoods.
"I travel not to go anywhere, but to go. I travel for travel's sake. The great affair is to go". R. L. Stevenson
David Bishop
2002 Winnebago Adventurer 32V
2009 GMC Canyon
Roadmaster 5000
BrakeBuddy Classic II