Word forms: (plural) solenoid switches
( Automotive engineering : Vehicle components , Lighting and electrical/electronic systems )
When the key switch is turned to Start and the gearshift is in neutral, the circuit
between the battery and the solenoid switch is complete.
The solenoid switch activates a heavy-duty switch that connects the vehicle's battery to the starter motor.
When the ignition key is in the Start position, a solenoid switch engages the starter's drive pinion.
Collins English Dictionary. Copyright © HarperCollins Publishers