Confused, need input. 1999 blazer Ls, low beams and high beams began working intermittently as the high beams would only engage when i could get the low beams on. Now, the low beams only work with the auto light sensor, no high beams and no control from the multifunction switch which i just replaced two weeks ago. Drl's work, everything else works as normal, other than when i go to turn the lo beams on with the master switch, and theyre already on from the auto lights, it kills them. Checked fuses, checked relays, checked power at the pigtail to the multi function switch. Im tearing into now, any insightful ideas would be a godsend.