A vehicle's ignition switch allows one to control the power to many of the car's accessories. The ignition switch also connects the starter to the battery, allowing the battery to send electricity to start the engine. The ignition switch includes the lock cylinder into which the key is inserted, and the electronic switch that sits just behind the lock cylinder. Sometimes two parts of the ignition switch are combined into one unit, in other cars they remain separate. The function of the ignition switch and starter was performed by turning a crank on the front of the vehicle. We live in a day of convenience and the ignition switch is one of many offered by AC Delco, Motorcraft and Cole Hersee.