Typically, your engine works with an ignition switch that actuates timely ignition operations prior to starting your engine. In maintaining steady stream of electricity throughout the system, your engine works with two sub-circuits in handling generated electricity. The primary circuit typically handles the flow of high voltage of electricity and the secondary circuit handles the return of relatively lower voltage of electricity to prior to its supply to other electronic device that works with your engine assembly. The role of your ignition switch is mainly to control the flow of electricity to the control circuit of electronic car accessories to prevent draining the chemical engine battery. By connecting the starter to the engine battery, it allows a powerful surge of high voltage of current to achieve quick ignition. To continually enjoy the tremendous gains offered by quick ignition, the part needs to be kept effective and responsive like new. Otherwise, you suffer the hassles of poor drivability and increased tail pipe emission which means more fuel wastage due to imprecision caused by switch failure. Your factory ignition switch typical has two or four positions for applications depending on the design specifications. It can also be actuated even when your engine is not running. In ignition key entry, the switch could be tuned at its accessory, off, on, and start positions. At accessory position, your car radio and other power operated car accessories could be operated. At this position, your engine uses least amount of battery energy which is ideal at stand-by mode. However, it should be positioned at its off position to prevent operating accessories that requires too much power like power windows to drain battery power. The on position allows all electronic automotive equipment to operate prior to driving which include fuel pumps and electronic engine sensors applications. As the name implies, the start position actuates engine start-up and is spring-loaded so the switch will not remain at on position when the key is released. Once your stock ignition switches starts fouling up, immediately finding and install replacement, consult our owner?s manual or a good repair manual before attempting to purchase precision fitting replacement. To conveniently locate the right switch application, all you need to do is visit our online shopping store. As a trusted source of genuine and cost effective auto-parts, you can rely on us to provide you with fine selections of equally dependable replacement ignition switches available for your vehicle's exact year, model, and year of application. Check out our online shopping store to complete your general automotive needs with premium auto-part deals any time or day.