
While most people believe that the motor feeds the electrical components in your car, it is actually the alternator that makes the energy to power the electrical system whiles also charging the battery. Without the alternator, this energy would not be generated.
The alternator was once referred to as a generator because of the energy that it produces. The process works as the vehicle's gas engine turns the wheels under the hood. This, in turn, triggers the wheel on the alternator to start moving and to generate energy to power the vehicle.