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The solenoid is an electromechanical device when connected to an electrical source such as the battery, it generates a mechanical movement. Its role is to be an actuating coil of a contractor, or a relay designed for a large electric current that connects the battery to the starter motor.

  • It is a coil of wire used in inductors, electromagnets, antennas, valves, etc.
  • The coil is capable of producing a uniform magnetic field in a volume of space when an electric current is passed through it. These types of solenoids can provide magnetic focusing of electrons in vacuums
  • The application of a solenoid varies in many different types of industries. It can be a simple locking device, an automotive gearbox, and an air conditioning unit.
  • If a starter solenoid receives insufficient power from the battery, it will fail to start the motor and may produce a rapid clicking noise. The lack of power can be caused by a low battery, corrosions or loose wiring connections from the battery cable.