Avoid tickets and accidents with both working headlights! New bulbs are much brighter too
White light when you back up - yup, they burn out and you can replace them with bright LEDs
If you have an electrical component that doesn't work, try replacing the fuse first
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!
Author
Hans Angermeier has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road.