I bought new bulbs for my headlights because my right headlight bulb blew out. Once I replaced the headlight bulbs they worked as usual, but three days later my right headlight stopped working, but it wasn't the bulb because I tested the bulb from my right headlight with my left and it worked fine. What could be the problem? A fuse? I noticed some crusty buildup around the connector of the right headlight, could that be anything? Any suggestions would help.