Report Headlight dimmer switch replacement 1981 in 1965-83 Avanti Posted May 18, 2021 Sorry I’m not that tech savvy. I will have my kid help me to load pic of connector so you can see it. The guy at NAPA tried to cross it to the Duralast part no., but nothing came up with the correct connector. He looked at several other GM switches but no match. The part in the column was fine. I could manipulate the switch by hand but it would not change settings. no problems since I substituted the foot dimmer, changes hi to low beam no issues.