Sensor-Amplifier Vertical Aiming
Sensor Amplifier vertical aiming should be performed with car unloaded, trunk empty, gas tank at least half full, and tire pressure correct. Put car on a level floor, and rock vehicle to equalize springs. Adjust vertical aiming screw at rear of bracket assembly (see Fig 1) until the bubble is centered in the level.
NOTE:
Do not tamper with the screw at end of level.
Always make final adjustment while turning aiming screw clockwise.