Exam 20: Lighting Systems

Once high voltage bridges the gap in the HID xenon arc tube, only about _____ volts are needed to keep current flowing across the gap.

Most modern vehicles have a warning system that alerts the driver when the driver's door is opened when the headlights or parking lights are turned on.

Circuits that can energize the high beams even if the headlight switch is off are known as ____ circuits.

Neon lights are used on some vehicles for center mounted brake lights.

Automatic leveling HID headlights are controlled by the ____________________.

The lower filament of a dual filament headlamp is for the high beam.

Identify the four basic types of headlights.

Sealed beam headlights are being discussed. Technician A say the lens of a sealed beam headlight has convex prisms molded into its inner surface to concentrate the light into a narrow beam. Technician B says a sealed beam is an airtight assembly containing a filament, reflector, and lens. Who is correct?

A standard sealed beam headlight is commonly filled with ____________________ gas.

Flash-to-pass systems blink the high beams on and off when the turn signal lever is moved to change lanes to pass another vehicle.

List the four main components of an illuminated entry system.

Fog lamps are usually tinted ____________________.

Technician A says blinking headlights can be caused by the self-resetting circuit breaker installed between battery and the headlight switch, that is kicking out due to a short. Technician B says flickering vehicle lights can be caused by a loose electrical connection. Who is correct?

Technician A says on some vehicles, if the turn signals blink faster than normal, the problem may be a burned out bulb. Technician B says on some vehicles, if the turn signals don't blink at all, the problem may be a burned out bulb. Who is correct?

Technician A says the brake light switch receives voltage from the ignition switch. Technician B says when there is light pressure on the brake pedal, the brake lights will be dim. Who is correct?

A customer complains that the turn signal indicator flashes unusually fast when the turn signal switch is in a left turn position. Technician A says the left side turn signal flasher is defective. Technician B says one of the left turn signal bulbs is the wrong wattage. Who is correct?

Which of the following is NOT a true statement regarding HID headlamps?

Technician A says some condensation on the inside of a sealed beam headlamp is normal. Technician B says the buildup of black spots on the lens of a sealed beam headlamp decreases the brightness of the headlamp. Who is correct?

Flash-to-pass systems are being discussed. Technician A says the high beam filament is turned on when the flash-to-pass switch is closed. Technician B say the flash-to-pass system only works when the headlights or parking lights are turned on. Who is correct?

Which statement concerning HID headlights is NOT true?