My 2001 Impala headlights will not come on. I don't think both lights blew out at the exact same time. I think it has somthing to do with the auto light sensor or the fuse. Fuses are abbreviated and can't figure out which one is for the headlights. As far as I can tell there is a relay near the fuse panel also. Can this be the problem? High beam switch will flash high beams but they will not stay on.