My '81 Excella II developed an intermittent 12v
problem 2 days before we were to embark on a 3000 mi vacation.
We thought a ghost had taken up residence. One minute the lights would work, the next minute they were out. LIkewise the entire monitor system.
My battery checked out at 12.83v and we were plugged into house currrent also.
We went an replaced all the fuses...BUT when I fooled with the 50A fuse, the lights flickered.
In 5 minutes I determined that the rivet that holds the bottom clamp for the 50A fuse was loose and not making contact with the metal strip to which all the 15 and 20A fuses are attached.
Not wanting to pound the rived (for fear of breaking something else,) I fabricated a solution work-a-round.
I took a 3" piece of #10 copper wire and wedged it behind the bottom of the 50A fuse and bent it into a 'U" and wedged the other end behind the adjacent 20A. fuse.
Admittedly, this was not the 'official way to do the job, but when you are pressed for time, do what is sufficient, is my motto.
Hopefully, this tidbit will help some other member address a similar problem.
I suppose if I took it to an RV repair shop, I would have been faced wtih a humongous bill for diagnosis, but they would have insisted on replacing the entire Univolt system.
Bob and Gail
1981 Excella II 31'
2001 F-250 crew 8' w/ Pullrite hitch.