Ignition Coil: Description and Operation

Ignition Coil Assembly:

This distributorless ignition system utilizes two ignition coils arranged as an assembly located at the back of the cylinder head. Each consists of two windings of wire, primary and secondary, around a laminated iron core. When battery voltage flows through the outer, primary winding, a magnetic field is created. When current flow is stopped by the igniter interrupting the ground connection, the magnetic field collapses onto the secondary windings, producing high voltage in the secondary windings. Ignition wires then direct voltage to the spark plugs. The ratio of turns in the primary winding to turns in the secondary winding determines voltage multiplication.