I never got an answer on the forum, and the best information I was able to glean was from internet searches. I found replacement remote control jacks for about $2,800, but I sold the camper about a year later for $3,400, so that would not have been a good investment.
Since then, I have discovered Raspberry Pi computers and have wondered whether a guy could build one and program it to provide remote control of power jacks?? Good luck with your quest.