[ELI5] How does a car know when to turn on automatic headlights? 677 viewsJanuary 3, 2024 Question90.61K May 30, 2021 0 Comments [ELI5] How does a car know when to turn on automatic headlights? In: Engineering 5 Answers ActiveNewestOldest Anonymous Posted May 31, 2021 0 Comments It is a photocell it detects light not dissimilar to how a solar plate works when there is light it makes voltage when there is no light no voltage You are viewing 1 out of 5 answers, click here to view all answers. Register or Login
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