So according to that last message from Cramer, I can use pin 36 to drive the power transistor, but why wouldn't mine work ? What would the appropriate settings be to run the transistor ? And what wire from the factory ecu would I hook up ?
There are only 3 wires that go to the power transistor:
1: ignition signal input 0.3-0.6v
3: ignition reference voltage 9-12v
6: earth.
None of them come close to the 5v output the megasquirt puts out..
The ignition signal input TO the Power Transistor will be 0-5V; i.e. when the signal to the Power Transistor is at 0V (or near to 0V), the Power Transistor knows not to discharge the coil.
When the Power Transistor receives a 5v input, it knows to discharge the coil.
I THINK this is how it is triggered. It could be the opposite way, i.e 0V to trigger, 5V not to trigger.
The ignition signal input is a square wave, so it can only be 0V (or near to it) or 5V (or near to it). If it is anything in between, the signal is noisy and it probably won't discharge spark from the coil.
The Ignition Reference of 9-12V and the Earth connection are only used to provide power / ground to the Power Transistor / Ignition Coil.
As for settings, I have NO idea on how to trigger the Power Transistor without frying it.
This you will need to search, plenty of people have done KA24's. Or just do the mods to drive the negative side of the coil directly from the MS2.