Replaced my driver side high beam and the old one shorted out when replacing now my both my driver side headlights stay on really dull and get slightly brighter when I turn on high beam? Passenger side still works fine.
Check for broken ground wire or bulb filaments crossed in the fixture..
SOURCE: 2001 GMC Sierra 1500 -
Sounds like a gound problem to me. Check you headlamp grounds. The ground circuits for your headlamps actually go through the underhood fuse block, then to the headlamp switch, then through Splice Pack #SP203 (Located under the left side of the dash it is bolted to the left "A" pillar) , then to ground #G200. (Which is actually the bolt that is holding the splice pack.) I have seen corrosion in the splice packs several times. You may want to disassemble it and clean the terminals. A LIGHT coat of dielectric grease usually works pretty good to prevent it from doing it again.
SOURCE: my 2007 headlights wont turn on
It is hard to say without checking your headlamp electrical circuits, but it sounds like you may have possibly installed the wrong bulb or installed it incorrectly and possibly blew a fuse.
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