The starter motor is one of the most important components in any vehilce. It is a powerfull motor that creates the impulse to crank the engine in order to fire up. Its high power is why it is attatched directly to the battery using high quality cables unlike any other components. When the key is turned, all systems are activated the last turn sends power to the motor and turns the crankshaft allowing for the first spark to be generated and fuel to be burnt to start the engine.