Good luck with that.
If you are lucky, someone will, but I know locally, you can find any service/wiring manual you want by talking with the county library system. Heck, can even search online for them. Anyways, might be an option in your case at least to figure out what does what. Of course, if you hook 12V up to the fan to test, either you get it spinning the right way, or wrong way.
If you have more than two wires to a fan, I wonder if they are dual speed?
Got any decent wrecking yards around you? If Dodge was anything like GM, many cars similar vintage probably share the same connectors, and will be much easier to find. Napa may even sell the pigtails, but they tend to be way too expensive for my taste for things like temp sender connector wiring.
I'd probably grab some mid-late 80's GM temp switches/connectors/wiring while I was in the yard too, if I could find them. Gotta be careful here, as many electric fan setups used a switch for a second fan only as a backup to the primary. If it's a GM single fan setup, it probably just uses a temp switch in the head or block somewhere.
Used fans, why not used connectors?
