Good progress yesterday.
I selected my ECU because it was waterproof and small enough to fit inside the original ECU case. With hindsight I maybe should have selected one with more outputs however I have solved the problem.
Because I’m running wasted spark there are two ignition outputs that can be configured for other uses and we proved that.
I’m using one to drive a solid state relay and then my fuel pump and the other for pulse width modulation control of the cooling fan. All proven now.


Wiring is progressing. I will wrap it when it working.

Only the crank signal is left to prove

Solid state relay from Maxx that can switch DC

PWM fan control proven.