On my 1990 Mazda 121, the low beam (and sometimes high beam) lights fail due to a faulty light switch on the steering wheel console. I have to pull it apart and clean up the contacts about once every year when it does it. The tail lights also go out. I can tell it has failed again as the dashboard lighting goes out. Andrew.
There is an adjustment screw in the top or side of the headlight nacelle. Turn it one way and it raises or lowers the beam and the other one moves it sideways.
headlight switch is probaly your trouble
The 1999 Chevrolet has a separate fuse for the low beam headlights. The low beam headlight fuse, can be found in the fuse box.
To adjust the headlights on a 1994 Mazda 929, park the vehicle on a level surface about 25 feet from a wall. Turn on the headlights and mark the center of the light beams on the wall using tape. Adjust the vertical and horizontal screws located on the headlight assembly until the top of the beam is at or just below the tape mark and the center of the beam aligns with the vertical tape line. Repeat for both headlights to ensure proper alignment.
High beam headlights reveal objects at a distance of at least 450 feet away. High beam headlights allow the driver to view obstacles in the road much sooner than low beam headlights.
You use low beam headlights when you're in a town or city in any location.
Use your high-beam headlights at night whenever it is legal and safe.
On most vehicles, the low beam headlights are the outside pair of lights. This is true when the headlights are side by side. When the two sets of lights are stacked, the low beam headlights are usually on the bottom.
The bright button on a 1999 Subaru Forester is used to activate the high beam headlights. When pressed, it switches the headlights from low beam to high beam, providing increased visibility during night driving or in low-light conditions. Typically, this button is located on the steering column or as part of the headlight control. To deactivate the high beams, simply release the button or switch back to low beam.
Car headlights have to be able to "dip" so as not to dazzle oncoming traffic, they therefore can switch between a "high" beam and a "dipped" beam and thus have a dual beam.
Use your high-beam headlights at night whenever it is legal and safe.
The headlight fixture probably contains moisture on the inside. When the headlights are "on", the moisture clouds the light beam, diffusing the light.