[hbens]

I did order a motor and control arm separately and replaced them both. The motor was bad from the vendor so I put the old motor back in. It failed a month or so later so I replaced the entire mid-ship fan assembly.

https://www.campingworld.com/dometic-aut...vents-fans 

There isn't access from within the coach and the control switches are in the 1/2 bath and kitchen.
I removed the wires from the open/close switch on the fan and hooked them to the small wires from the control switches (figured I had a 50% chance of getting these right). The 12v/ground larger wires were hooked up the same as before. I cranked the temp knob all the way to the cool side.
Everything works as expected now.