I was looking into this last year. I was going to use a scooter carrier for the elevator. This wis already wired for 12 volts & will go up & down with a great enough weight capacity. I wanted to leave it on most of the time as I have classic MH. thr frame could have held the extra weight. It would have made the MH too wide for travel so I abandoned the idea. Maybe this can start your search.
"Sometimes I wonder if the world is being run by smart people who are putting us on, or by imbeciles who really mean it." Mark Twain
AIR 22749 WBCCI 2349 NOVA TAC TN-6
1989 345 LE Classic Motorhome