![Do Incandescent bulb use for automotive have polarity since it operate on DC Voltage. My assumption is that it act like resistance hence there's no polarity. Is my assumption correct and how Do Incandescent bulb use for automotive have polarity since it operate on DC Voltage. My assumption is that it act like resistance hence there's no polarity. Is my assumption correct and how](https://i.redd.it/ejipcz2ukzy51.jpg)
Do Incandescent bulb use for automotive have polarity since it operate on DC Voltage. My assumption is that it act like resistance hence there's no polarity. Is my assumption correct and how
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If AC changes direction, how do LED bulbs work given that diodes only allow one-way movement? - Quora
![Polarity of the 2 pins on an H7 bulb - what are they? - Ford Focus Club - Ford Owners Club - Ford Forums Polarity of the 2 pins on an H7 bulb - what are they? - Ford Focus Club - Ford Owners Club - Ford Forums](https://fordowner.b-cdn.net/uploads/monthly_2022_12/1347830916_H7polarity.jpg.c94380ac0cce808a2b25d5a437997c95.jpg)
Polarity of the 2 pins on an H7 bulb - what are they? - Ford Focus Club - Ford Owners Club - Ford Forums
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