Starter motor function - What it does:
Cranking : When electrical power is applied to terminal 50 of the starter motor solenoid, the solenoid relay main contacts close applying battery
current to the starter motor.
Automotive starter motors are mostly either permanent magnet or series wound direct current (dc) electric motors, though large industrial engines may use a heavy duty dc starter motor, or hydraulic, or pneumatic (air operated) starter motor , or even a seperate engine (donkey engine) to provide cranking.
Call 01743 884888 for starter motor supply enquiries
Starter Motor Fitting :
How to wire a typical Negative earth type Pre-engaged starter motor: