Newbie here, I just bought a 2003 TL from a as is warranty place (I know, STUPID!) and my left headlight wasn't working. Got all ready to buy a new bulb and one day I get ready to leave work and the opposite headlight is on and the original working one is off. Tinkered a little more and got both of them to come on once. Any ideas on what this could be? I'm thinking wiring. If this has been addressed elsewhere, let me know where.