A headlight motor,
item 12, has a long rod ending in a ball that snaps into the bottom of the headlight reflector. The rod and ball extend and retract, to tilt the reflector up and down.
The motor is set up as a servo that tracks the setting of the dash, headlight range adjustment potentiometer. The motors are likely where the pot last sat when it and the motors last saw power. Most likely that was at the zero, the car normally loaded position, with no downward headlight trim. That is where mine have sat for ages.
If you want, you can remove the motors and substitute two of item 11: to fix the headlights at the zero, untrimmed position. I wish I could do that on the right side, as the motor can get in the way when I work on the car.