An alternator is a generator of electric power in your car and is a major component of your vehicle’s charging system. Whenever your engine is running, the alternator charges your battery and supplies additional electric power for the vehicle’s electrical systems.
A starter is a device used to rotate an internal-combustion engine so as to initiate the engines … Although the electric starter motor was to come to dominate the car market.
Distributor caps and rotors are responsible for passing the voltage from the ignition coils to the engine’s cylinders in order to ignite the fuel-air mixture inside and power the engine. The coil connects directly to the rotor, and the rotor spins inside the distributor cap.