I have a problem with my headlight. The driver's side headlight's low beam isn't working. The high beam works, the daytime running lamp light works, just low beam isn't working. I replaced the bulb with 2 different new bulbs and both bulbs lit the same way, with high beam and daytime working and low beam not working. Any ideas before I start pulling wires out and really mess things up? My Cav is a 2001 4-door if that info is needed. Please help. Thanks!