chapter 56

Which bulb is brightest?

1157

Tech A says that the bulb trade number is the same for all bulbs of the same size. Tech B says that a dual-filament bulb has different candlepower ratings for each filament. Who is right?

Technician B only

A technician replaced a 1157NA with a 1157A bulb. Which is the most likely result?

The amber color of the bulb is a different shade.

If a 1157 bulb were to be installed in a left front parking light socket instead of a 2057 bulb, what would be the most likely result?

The left parking light would be slightly brighter.

A defective taillight or front park light bulb could cause _____.

The turn signal indicator on the dash to light when the lights are turned on The dash lights to come on when the brake lightS are on The lights-on warning chime to sound if the brake pedal is depressed

Interior overhead lights (dome lights) are operated by door jamb switch that ____

complete the power side of the circuit complete the ground side of the circuit

A customer complained that every time he turned on his vehicle's lights, the left-side turn signal indicator light on the dash remained on. The most likely cause is _____.

A poor ground to the parking light (or taillight) bulb on the left side A defective (open) parking light (or taillight) bulb on the left side

Flasher units are being discussed. Tech A says that DOT (Department of Transportation) approved flasher unit should be be used for turn signals. Tech B says that a parallel (variable-load) flasher will function for turn signal usage, although it will not warn the driver if a bulb burns out. Who is right?

Both Technicians A and B

A defective brake switch could prevent proper operation of the _____.

Cruise control ABS brakes Shift interlock

Electrical feedback is usually a result of _____.

Lack of a proper ground