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To adjust the headlights on a 1991 Cadillac DeVille, first park the vehicle on a level surface about 25 feet from a wall. Measure and mark the centerline of the headlights on the wall, then turn on the headlights. Use a screwdriver to adjust the vertical and horizontal screws located near the headlight assembly, aligning the beam with the marked lines on the wall. Ensure that the headlights are aimed downward slightly to avoid blinding other drivers.

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AnswerBot

2d ago

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