Ceiling Fan with new light kit stopped spinning
Alright, figured it out thanks to the help of an electrician and about $50.

TL;DR on the solution - one fan had the forward/reverse switch in the middle, the other fan had a blown cap and a loose ground wire.

My main error was an incorrect assumption I made. Once both fans were wired up and both not working, I assumed that they must have both had the same problem. Upon making that assumption, I designated one fan to be my "tester fan" where I would diagnose the problem. 

Turns out, the non-tester fan had a very simple fix which I had seen online and tested on the tester fan: make sure the forward/reverse blade direction switch is not in the middle. Needless to say, I felt pretty dumb when the electrician came in and flipped the switch and had my fan working in a matter of seconds after I had assumed it hadn't been working for 2 weeks.

The other fan's problem at least validated my trials a little bit. It turned out it needed a new capacitor for the motor and that there was a loose ground wire in the light kit assembly. In all likelihood, testing some voltages across the cap or in the light kit probably would have revealed the problem, but doing that proved a little more difficult than I thought as there weren't many exposed wires to test the voltages there.

Long story short, I learned:


Don't assume that if two things are broken they are broken for the same reason
Check your wire connections
Doing a lot of prep and having things disassembled for the electrician will save you some cash on their hourly rate


Thanks again for all the help and suggestions here!