How Do Automobile Headlights Work?
Manual Control Automobile headlights are manually-operated from inside a vehicle, usually by way of a small switch located on a vehicle’s dashboard or turn signal lever arm. A driver simply activates the headlight switch,either by pulling a knob, turning a switch, or pressing a button, and the headlights turn on. Headlight switches are designed to be accessed easily from the driver’s side seat; therefore, they are placed in highly-visible, easy-to-reach locations on the driver’s side area of a car’s dashboard or on the left-handed turn signal lever. Powered by Car’s Electrical System The electrical power needed to power a car’s headlights comes from the car’s electrical system, which includes the car battery and car alternator. When the headlight switch is activated inside the car, an electrical circuit is opened, which means that electricity begins to flow between the headlight switch and the car’s electrical system. Insulated wiring allows electrical current to flow from the car’s el
