How does it work? The E-Spark Conversion is a dual fire system. The points are replaced by the E-Spark module that consists of an integrated photo coupler, a signal processor and a power switch. Each time the shutter wheel stops the infrared light from reaching the photo coupler, the electronic circuitry energizes that ignition coil. When the shutter wheel allows the infrared light to reach the photo coupler, the electronic circuitry allows the stored energy in the ignition coil to discharge. Using MALLORY® time tested breaker less ignition circuit, combined with modern surface mount Thermal-Clad construction, the Mallory E-Spark Breaker less Conversion Kit can drive any ignition coil or combination of ignition coils with a total primary resistance of at least 2.0 ohms. We recommend ignition coils with 2.0 - 3.0 ohms for racing applications and ignition coils with 3.0 - 4.0 ohms for street and highway use. Converting to the E-Spark Breaker less Ignition is as easy as a three-wire connection. If your OEM advance is starting to show it's age, we recommend you install a new ACCEL® Advance Weight Assembly, part number 8506.