There'* two T15'* on the top of the headlight.
The inner controls vertical, the outer controls the horizontal.
Here'* how to aim them:
Put the car together.
Park on a level place (within .095*), with a wall 25 feet in front of the car. (gotta be exact, point directly at the wall)
Close all doors
Don't work on the car or have other things taken apart
1/2 tank or less of gas
Check proper tire pressure
On the wall you will see a bright area, this is what you're measuring.
The top needs to be 25.4" from the ground
1328mm between the center of the beams
664mm from the center of the drivers' beam to the center of the car.
(Page 8B-9 in the '93 FSM)