Q: My headlights flicker when I drive.

There are several factors that can cause headlights to flicker while driving. The more common problems could be related to the headlight bulbs themselves, a weak battery, or even the alternator starting to fail.

If those items are fine, however, then I would have to dig a little deeper and inspect the wiring, relays, switches, and the light sockets. Loose connections, worn-out switches, or burnt relays and sockets can all cause intermittent breaks in power.

Have your lights checked out by a certified mechanic sooner rather than later to keep you from getting stuck driving in the dark without headlights, and to prevent unnecessary damage to your electrical system.