Ordered and received the step motor from Lippert (~$190). Ran my rig up on a 6" ramp to get clearance to slide underneath. Removed the 3 bolts that hold the motor in place, and removed the 2 "D" clamps that hold the wires in place. Installed the new motor, replaced the 3 bolts and spacers, re-installed the wiring in the "D" clamps, and the ground wire. Hit the step switch and everything ran as designed.
Lesson learned: check eBay for replacement motor. Would have saved $100
2014 Berkshire 390BH-60
2007 Explorer Sport Trac