I know nothing about this 3rd brake

/ turn signal light other than it looks to be new old stock in its original box with shelf wear.

This antique car truck turn signal light assembly is a rare find for vintage car collectors. It is a new old stock item that comes with its original packing and box. The light features Stop-Go-Turn functionality and uses incandescent lighting technology with a D2C bulb shape code.

It fits both front and rear placement on vehicles and has a universal fitment. The light has a black housing color with an amber lens color and runs on 6V voltage. This turn signal light assembly is compatible with various car models from the 1920s to 1940s, such as Ford Chevrolet Buick Packard Pontiac, Buick Nash Plymouth Pontiac, GMC Dodge Brothers Buick Diamond .

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