All of the following are types of automobile lamp bases EXCEPT:

The hazard warning light system operates which exterior lights on the vehicle?

What type of dome light has a base on each end of a cylindrical light bulb that fits securely between spring steel contacts?

Modern lighting system features include the increased use of all of the following EXCEPT:

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

Why are lighting systems with multiple bulbs typically connected parallel to each other?

All of the following turn on with the taillights

EXCEPT:

What does the acronym BCM stand for?

Technician A says park, tail, and marker lights are all high-intensity or high-wattage bulbs used to mark the outline or width of the vehicle.

Technician B says license plate illumination lamps are connected in series to the taillights and operate whenever the taillights are on. Who is correct?

Marker lights are used in all of the following vehicle locations EXCEPT:

Technician A says backup lights, also called reverse lights, are white lights mounted at the rear of a vehicle. Technician B says backup lights are the only red lights on the rear of the vehicle. Because they operate only in reverse, other drivers can tell that the driver is backing up. Who is correct?

Technician A says many vehicles by law now have a higher, additional third brake light mounted on top of the trunk lid or on the rear window. This light is called a center high mount stop light, (CHMSL) or chimsul. Technician B says the brake lights are activated whenever the driver operates the foot brake to slow or to stop the vehicle, or when a control module automatically applies the brakes. Who is correct?

Technician A says that some turn signals are flashed by a flasher unit/CAN. Technician B says that some turn signals are flashed by the BCM. Who is correct?

The flasher unit uses a timing circuit to pulse the current flowing out of the flasher unit times per minute.

Technician A says some domestic vehicles use the rear brake lamps as turn signals by flashing the brake lamp on one side to indicate the turn.

Technician B says brake lights, which may also be called warning lights, are white lights mounted to the rear of the vehicle. Who is correct?

Which of the following is not a possible aspect of a smart lighting system?

All of the following are true about high-intensity discharge (HID) headlights EXCEPT:

Which of the following is not a possible component of a passive night vision system?

What type of headlight requires replacement of the entire unit when a single filament fails?

With some vehicle DRLs, the lamps on the front are the headlights which are typically operated

at a _ power level, providing light without excessively decreasing bulb life or using full electrical power.

LED lighting is being discussed. Technician A says that if an LED light panel has a few LEDs of an assembly that are not illuminating, the entire assembly may need to be replaced.

Technician B says that if all of the LEDs of an assembly are not illuminating, there may be a problem with the lights source voltage or ground. Who is correct?

Technician A says that if a bulb is dim when operated, the circuit likely has a short to ground. Technician B says that if a bulb is dim, you should perform a voltage drop test on the power and ground side of the bulb. Who is correct?

Once ignited, the pressure inside an HID bulb can build up to a very high pressure (around 220 pounds per square inch) due to the high operating temperature (about

).

Technician A says virtually all lighting system wiring diagrams use the same symbols and numbering system. Technician B says manufacturers design circuits to operate in specific ways, then create schematics or wiring diagrams to assist in the repair and maintenance of the designed circuits. Who is correct?

Technician A says that LED panels can be repaired by replacing individual LEDs as needed. Technician B says that LEDs can be diagnosed with a DMM to test for power and grounds. Who is correct?

Which of the following is NOT normally required as part of a headlight adjustment?

aligners sit in front of the vehicle

after being calibrated for the floor slope and orientation with the vehicle.

Two technicians are discussing a vehicle with one dim headlight. Technician A says it could be caused by a voltage drop in the headlight ground circuit. Technician B says it could be caused by a voltage drop on the headlight switch. Who is correct?

Technician A says that hazard warning lights use a flasher unit that can be a separate unit or the same as that used for the turn signals.

Technician B says that daytime running lights are used to warn other road users that a hazardous condition exists or that the vehicle is standing or parked in a dangerous position on the side of the road. Who is correct?

Red or amber flashing lights alert other drivers to a change in direction and are called:

All of the following statements with respect to the function of headlights are true EXCEPT:

Technician A says that light-emitting diodes (LEDs) have better visibility in inclement weather, operate at cooler temperatures, consume less energy, are much smaller, and can last up to 100 times longer than traditional bulbs. Technician B says that LEDs can reduce the braking light response time by about two-tenths of a second. Who is correct?

Which lights are wired in parallel with the taillights and operate whenever the taillights are switched on?

All of the following are part of the reverse light circuit EXCEPT:

Technician A says that some brake lights get power from the brake switch through the turn signal switch. Technician B says that many turn signals use amber lights. Who is correct?

When aiming headlights:

Which of the following lights produces more lumens for the given wattage when compared with all other lights, and has a bluish tinge?

Technician A says that all modern vehicles by law must be equipped with a center high-mount stop light (CHMSL). Technician B says the CHMSL is usually mounted on top of the trunk lid or in the rear window of a vehicle. Who is correct?

Technician A says that incandescent bulbs resist vibration well. Technician B says that high-intensity discharge (HID) headlights require a ballast to raise the voltage for the light. Who is correct?

Which type of headlights produce light with an electric are rather than a glowing filament?

All of the following turn on with the taillights

EXCEPT:

Which type of light bulb has a base on each end of a cylindrical bulb?

Technician A says that a light intensity meter is used to measure the brightness of headlights.

Technician B says that if a bulb is dim, you should perform a voltage drop test on the power and ground side of the bulb. Who is correct?

Many vehicles use halogen light bulbs. What must you avoid touching when handling halogen bulbs?

Technician A says that cornering lights are typically used in poor weather such as thick fog, driving rain, or blowing snow. Technician B says that fog lights are red lights, usually installed in the bumper or fender, and designed to provide side lighting when the vehicle is turning. Who is correct?