The headlamps on a 1994 Corolla will tilt up and down to adjust the range when you move a small knob near the handbrake.
The Headlamp housings holding the Glass are screwed rigidly onto the metal car chassis. And I can see no tilting mechanism or anything similar in the casing that holds the actual bulbs.
When I move the knob I can hear a whirring of an electric motor. Can this be magic, since i'm not clever enough to figure out how this is actually moving the bulbs or anything else. And it's looking like one headlamp's tilting movement seems to be more than the other.