My front right side headlight will go out and stay out. The bulb is fine, but the socket where the bulb is placed into looks black. I thought the socket was bad, so I replaced it with new, but that still didn't work. The headlight went on for a while, then the same arching like issue happened that turned off the bulb. Again, the socket look a bit black on one connection side, and the bulb was fine. Where would you suggest I look? I don't think I want to replace the whole wiring harness to the headlights, but something is charging incorrectly.