How Do You Troubleshoot Headlight Problems?

By Staff WriterLast Updated Mar 26, 2020 9:44:22 AM ET

Troubleshoot headlights by identifying the problem, investigating the potential causes and making the necessary repairs. Typically, problems with a single headlight involve issues with only that headlight's bulb, socket or wiring. Problems with both headlights usually correspond to a blown fuse, broken relay or worn-out switch.