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Alternator Facts

Most people believe that the battery in a vehicle runs the ignition and all the electrical features of a car, such as the lights, the heater, or the window activators. Such an assumption is false. The battery provides the initial spark to start an engine, after that, it is the alternator that supplies power for continued ignition and all the other electrical aspects of a vehicle.

The alternator runs off the belt system powered by the engine crank. Once the car starts, the alternator begins generating the necessary current to recharge the draining battery, power the lights, provide...

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