What causes a head light to stop working?
What causes a head light to stop working? Most headlight failures are caused by a blown a fuse. Other common problems include bad relay, switch, or module. Wiring problems, especially inside the headlight, can also cause a headlight to stop working. What to do if your headlight is not working? If one or both headlights don't work after you replace the bulbs, check the fuses. The low beams and high beams have their designated fuses for each of the circuits. In some car models, you will have a separate fuse for the left and right low beams. Locate the fuse...