Ignition module pinout

something like:

* +12V supply

* channel A, low-current signal

* GND

* channel B, low-current signal

* Unplug the connector.

* measure connectivity to known GND (you found GND)

* turn on ignition (no cranking)

* measure the supply (you found +12V)

* turn off ignition

* only 2 combinations left, either A fires 1&4 (and B fires 2&3) or the other way around. Make "sparkplug" gaps between the pairs of HV outputs (using wires: just don't kill yourself, don't hold anything in hand during ignition on) mdn01 command fires h[2]=.. THIS .. .. .. .. .. ..

There is slight chance that the module wants 12V and cannot be fired with genboard v3.3's 5.5V logic-level ignition output. This is very unlikely, since in this case the original setup would work very hazardously with low VBatt. No sane engineer would use a threshold voltage higher than 3.5V