[Guy]

"Googleing"  old and new part numbers should tell you if old and new have the same form factor for easy parts changing. Looks like Southwire has replaced that model with a current one. 40350RVC. 700 dollars or there abouts. Footnote tells us that if you have a surge Guard remote in your coach, you will need to change it out to 40299,  ( another 100 dollars) as the old remote is not compatible . Certainly cheaper than a trip to Miami, IF ...the transfer switch/ power protector is actually your problem.   . 50RVC