Coil Ignition System

• The ignition coil is a part of the engine’s electrical system in a vehicle. It produces a high-voltage electrical current needed for ignition. The ignition coil amplifies the relatively low battery voltage from 12V to a high voltage of tens of thousands of volts for the spark plugs.
• Some vehicles have an ignition coil attached to every spark plug on the top of the engine block, while others have a single coil that ignites every spark plug in the engine.