Exam 20: Lighting Systems

The turn signal and hazard flashers are located in the ____________________.

While the car's headlights are adequate in normal driving circumstances, some customers desire ____________________ lights for special conditions such as fog or extended night driving.

Headlight circuit protection devices are being discussed. Technician A says the headlight circuit is protected by a self-resetting circuit breaker. Technician B says the headlight circuit is protected by a single maxi fuse. Who is correct?

Describe how daytime running lights function.

The photocell sensor/amplifier for an automatic light system is usually mounted under a group of perforated holes in the upper instrument panel pad.

Technician A uses a powered test light to check a lightbulb. Technician B uses an ohmmeter. Who is correct?

Some light circuits are ground controlled, where the lightbulb has power all the time and the light switch completes the circuit to ground.

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

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

Technician A says on all vehicles, the fuse that protects the backup light system is the same fuse that protects the turn signal system. Technician B says vehicles equipped with automatic transmissions use a combination backup/neutral start switch. Who is correct?

Headlamps either have a replaceable lightbulb or they are ____________________ beams, which must be replaced as a unit.

When should a vehicle be equipped with a heavy-duty turn signal flasher?

Describe adaptive headlights.

Describe an automatic light system.

How long does it take an HID-type headlight to reach maximum intensity?

The element vapor used in most halogen lightbulbs is ______.

Some headlight assemblies are equipped with a ____________________ level to aid vertical headlamp alignment.

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?

An underhood lamp is typically controlled by a _____ switch.

Most composite headlights are vented to release the pressure of heated air.