Following the awesome provided how-to video, I removed the bottom, back panel from the fridge (after unplugging the fridge). I then removed the old motor/fan assembly from where it was mounted. I mounted the new motor/fan assembly in the same spot, hooked up the provided power adaptor to to the existing wire harness, then re-attached the back panel.
I plugged the fridge back in and only heard the quiet purr of a working motor the way it should be.
Really the only thing that took time was putting the motor/fan assembly back in as it's a little tight to fit hands in there.