1956-1972 General Motors. In the 80s & early 90s, I would make a weekly trip to Pick Your Part salvage in Hayward, CA and come home with one or two 50 gal trash bags full of T-3 headlamps, both the quads (i.e. Chevelle) & twins (i.e. Camaro) at a cost of $1.00 ea. These were the days before ebay & online shopping so I listed and sold them via Hemmings Motor News, at $45 for a set of quads & $50 for a pair of the larger & rarer twins. Everyone back east was looking for these and I couldn't keep them on the shelf. It was a very lucrative mini-enterprise, until one day I discovered that the T-3s had been removed from all of the older GM cars, even those that were still waiting to be unloaded from the transporters. Someone at the yard had gotten wise & stole my enterprise away!
This is lectriclimited's link:
https://www.lectriclimited.com/lighting-fuse-flashers
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