65 Valiant Tail gate window motor

Same as a power window motor. Two wires. Reverse for other direction. Perhaps a knock on the motor will get it turning. Not a hammer, but maybe a hammer handle.
Just a short anecdote, i used a rear power window assembly from a dodge wagon to run the back window in my 77 jimmy. Worked slick. So if your motor has bit the dust, can always fabricate another into its place.