Elite- Welcome to iRV2!! And congrats on your new baby which sounds like a hoot.
You'll need to add some info, especially since your unit is rare at least due to age. It is likely the 12V goes from a battery to a distribution/fuse panel of some sort. If the Aloha has a charger, that may also incorporate the fuse panel, and it may be involved in the lack of 12V. If you have a charger, I'd plan on replacing it, as old chargers of that era are not very friendly to batteries and the newer style 3-stage chargers are great.
Poke around, snap some photos and post them here for some deeper thinking and advice on diagnosing the problem. You can find the process for posting photos here
, see post #7.