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  2. Headlamp - Wikipedia

    en.wikipedia.org/wiki/Headlamp

    General Motors introduced the first automatic headlight dimmer called the "Autronic Eye" in 1952 on their Cadillac, Buick, and Oldsmobile models; the feature was offered in other GM vehicles starting in 1953. [149] [150] The system's phototube and associated circuitry were housed in a gunsight-like tube atop the dashboard. An amplifier module ...