The average automobile has exterior headlight bulbs as well as turning-light bulbs and brake bulbs. Many automobiles also have exterior fog lights. In an automobile's interior, consumers can find instrument panel lights and overhead lights as well as a number of other interior lights.
Several different types of light bulbs can be found in a vehicle's lighting system. Some automobile manufacturers fit high-intensity discharge bulbs like metal halide bulbs or xenon bulbs in their headlight fittings while other manufacturers employ halogen headlights bulbs. LEDs (light emitting diodes) are found in instrument panels and halogens are found everywhere else..
Despite the fact that they require a lot of power to operate, high-intensity discharge bulbs are often used as headlights because they offer generous light outputs. No other bulb on an automobile needs to produce such high outputs, which is why high-intensity discharge bulbs are only used as headlights on automobiles. Most other bulbs on an automobile are halogen because they are relatively efficient and cheap to produce. LEDs are compact and produce very little heat. They are used on instrument panels and other places where low-output, efficient lighting is needed.