I've got two Hyundai's. Both go through h7 headlight bulbs like they are free. I would guess I'm seeing a 3-6 month life span per bulb. The voltages on both cars are fine, and both alternators have been replaced (one failed electrically, the other was a bearing) and this bulb failure rate continues with the new alternators. Is this "normal"? That's a lot of headlights! We do run with the headlights on all the time. Is there an compatible h7 type bulb out there with a longer life?
Thanks - Dan