Headlight Operation:

Used for nighttime illumination, these sealed beams have one or two tungsten filaments in a sealed glass case. Lights with two filaments can be used for both high and low beams, but lights with one filament are only used for high beams.Halogen lights, used in late model vehicles, emit more light than a standard sealed beam. Identifiable by the word "halogen" on their face, they're easy to replace and relatively inexpensive.They can also be used as aerodynamic lights that have a small halogen inner bulb that's replaced without removing or replacing the headlight assembly.

How To Instructions:

Inspect - Check for obvious problems.
Replace - Out with the old, in with the new.

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