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.
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