This explains why headlights should be aimed correctly so that they do not blind other drivers on the road and also so that maximum illumination of the road is achieved. Periodic checks of the headlight should happen annually or each time there is change of the headlight or front end body work. The following is the procedure of adjustment that can be carried out to provide a temporary solution until the car is aligned by a professional. Headlight housings are adjustable and each of them has room for one Phillips adjustment screw. The headlights have only the vertical adjustment. To change them, it is required to have a blank wall located 25 feet in front of the vehicle and the flat floor. The vertical masking tape should be applied on the wall and be parallel to that of the vehicle center line and the center lines of both headlights with another horizontal masking tape line marked on the wall in relation to the center line of all the headlights. The vehicle should be stationary with a tilted towards the front angle; the fuel gauge should ideally be set between the one-quarter to three-quarters marks and the car's load should be minimal. For low beam adjustment, the high-intensity zone should lie two inches below a horizontal line while for high beams the high-intensity zone should be right on the horizontal line. Hence it may not be possible to have perfect alignment both for high and low beam hence it recommended to work on low beam for safety. Fixture alignment: Headlights particularly front ones should be aligned especially soonest by a dealer or a service station.
