Answer: foglamp

AnswerCrossword Clue
FOGLAMP

It's usually a yellow light

FOGLAMP

Aid on a misty night

FOGLAMP

Aid for dealing with pea soup

FOGLAMP
Auto-front accessory
FOGLAMP
It's often amber
FOGLAMPFront-of-car accessory
FOGLAMPBad weather auto accessory
FOGLAMPBright light in inclement conditions