Head lights but won't go down

I could spin the plastic about the gear with little effort so that must be part of the problem. The next picture shows the gear welded to the bar.

Replaced the main gear and the 2 switches, then rewired and adjusted the motor gear clearance with the plate gear and she works.

I might be doing this same inspection, headlights won't go up or down right now on a car I just purchased, any hints on getting access to the headlights before I dig into the manuals?

Access to the headlights themselves or to the lift mechanism?

You can open the trunk and turn the black knob to raise or lower them, provided the gear isn't broken like mine was. Otherwise I had to losten the 3 screws that hold the motor gear against the plate gear on the bar. Then you can just lift them up and down by hand to trouble shoot the problem. Radiator location could make getting to the front bolt difficult.

FWIW, I recently had this problem in another Pantera. I found the power for the lights and for the raise/lower motor is from two different sources. The raise/lower motor gets its power from a spade-lug on the side of the headlight rocker switch. There are two choices right next to each other...and someone had plugged the power wire onto the wrong lug. Pull the console gauge panel and look to see if the motor wire has fallen off the headlight switch.