The electrical system in an automobile is comprised of three parts that must all function individually for the
system to operate in balance. The battery is the first part.The battery stores electricity to spin the starter and start the engine when the ignition key is turned. The alternator is next in line.
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The alternator produces electricity once the engine is running. It gets its juice for making juice from a belt
and pulley system driven by engine power. As well as producing electricity for heated seats, turn signals,
and the four in-seat DVD players, the alternator also sends extra electricity to the battery for storage. The
battery can also help out during times of heavy electrical demand. The third component is the voltage
regulator. The aptly named component tells the alternator how hard to work depending on electrical
demand, and regulates the flow of electricity coming from the alternator and going to the battery and
accessories.
If all goes well, there will be electricity in wait when the key is turned, as well as when the engine is
running. If any one of these parts wears out or fails, the symbiotic relationship of the automotive electrical
system goes pell-mell. A number of unwanted things can happen to you by way of an out-of-commission
electrical system, from having no radio to absolutely no electrical power to get the engine going again.
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