An Ignition (or starter) switch is a switch in the control system of an internal combustion engined vehicle that activates the main electrical systems for the vehicle. Besides providing power to the ignition system components (the starter solenoid and ignition related components such as the engine control unit, spark coil and distributor) it also usually switches on power to many "accessories" (radio, power windows, etc.).
The ignition system is used to ignite the fuel-air mixture in the engine.
The starter system is the ignition system, plus the battery, and starter switch, relay, solenoid & electric starter motor.
The ignition switch usually requires a key be inserted that works a lock built into the switch mechanism. It is frequently combined with the starter switch which activates the starter motor. The ignition locking system may be bypassed by disconnecting the wiring to the switch and manipulating it directly; this is known as hotwiring..
Famous quotes containing the word switch:
“Children ... after a certain age do not welcome parental advice. Occasionally, they may listen to another adult, which is why perhaps people should switch children with their neighbors and friends for a while in the teen years!”
—Marian Wright Edelman (20th century)