The Active Power Filter is designed for Unilite Ignition Systems
that experience failures with the ignition modules from voltage spikes (voltage transients, power surges).
Voltage spikes are associated with "noisy" electrical systems from electrical defects such as worn or dirty alternator brushes, corroded or oxidized electrical connections and similar electrical problems.
Voltage spikes are clamped and regulated by the Active Power Filter from damaging the Unilite Ignition Module.
The Active Power Filter connects between the distributor female connector and the distributor wire harness male connector and attaches easily to the distributor with velcro.