Re: How do Atom Computer Ignition modules work?

[debe]

The single wire modules may not work unless you wire them in reverse polarity. That’s why 2 wire ones are marketed. I have used a single wire module before & had to fit a small heatsink to it & insulate the module from the motor, to reverse the polarity. With all these modules the polarity is trial & error, as it depends on the polarity of the Ign coils pulse in the primary windings. For example in Seagull outboards the Villiers coil is wired one way, but the Wipac is the opposite way. In my experiments I fount the Wipac coil on the Seagull was the hardest on the module, until I fitted the transient protection diode.