Now heres where it gets interesting. The original switch has a round face. These 2 replacements have square faces. There is a subpanel behind the dash switch panel. The subpanel is curved and it can be difficult to fit a square part into a round opening. I ended up using the AutoZone SW144 because it did work but the Napa HL6554 albsolutely will not work. Now there are at least a dozen other replacement switch part numbers floating around in the GMC community. Its possible that one of those switches may have a round face. I don't know. But if you'd like to investigate it be my guest. If you find one please post that information in the comments section below. Here are 2 interesting links to follow for information on other switch and part numbers. http://users.california.com/~eagle/chassis.html and http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=64251&rid=0&S=926f12a6f3e63cbb73ec6888454c4855#msg_64251 You need to page up and down on these links but the info is there
The first link goes to something unrelated
and the second to a GMCNET thread that does
not seem to address the headlight switch.
Can anyone direct me to the correct info?
Good information otherwise, thanks!
Bukzin
'77 Palm Beach
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