What you probably have is an Atom ignition module originally made in Australia. Once their patent expired, everyone got on the bandwagon and started making them. They came in different colors depending on the application and the red ones are the correct ones for outboard magnetos. I like the Atoms and swear by them. One word of caution, beware of Nova or Nova II modules as they won’t stand up in an OMC magneto.
Here’s a link to an older thread on the Atoms: https://aomci.org/forums/topic/how-do-atom-computer-ignition-modules-work/
