Can't Get Enough
Join Date: Sep 1999
Location: Cotopaxi, Colorado
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Re: Ignition Module - what does it do?
Basically it controls the ground for the coil. A coil is just a transformer. A transformer will not work with DC voltage, it just becomes a magnet. The moment you take away the DC voltage, the magnetic field collapses, and "induces" voltage into the secondary windings, and thus, spark. Think of it as "points closed, then points open", or "transistor on, then transistor off". The distributor does two jobs, first primary (low voltage), which turns on and off the module. Second, is the secondary (high voltage) , which distributes the high voltage spark to the proper cylinder.