Reply to "Head lights but won't go down"

As I recall this motor is unique due to the casing being used as conductor which is why it is insulated. Make sure the grommets where the wires go into the motor casing are in good condition as this will short out the wiring. The plastic gear is the same as the gear for the windows. Brass replacements are available. I think I have some SS screws for the micro switches if you're interested. When installing it make sure the microswitches are set to prevent the motor trying to overdrive the buckets either open or shut. This causes wear on the gears. The manual override knob is useful in this case. Use the ignition switch to turn the motor on/off and make the final adjustments using the knob and measuring continuity through the switch with a multimeter or an equivalent. And yes, the switch reverses the polarity of the wires to reverse the motor's rotation. Just might be getting the hang of it!