I'm trying to figure out what functions of the MS3 are mapped to each pin on the ECU connector. I've checked the MS3PnP manual, and the Miata specific MS3PnP manual and neither tells me exactly whats connected to what (ex Injector I to 3U).

My charge light comes on occasionally, but the MS3 doesn't have anything listed as the charge warning lamp indicator output. So, I'm trying to figure out if something else is hooked up to that output.
I called DIY and they said it was hooked up to an analog circuit internally, and therefore the ECU doesn't digitally control that output. Interesting.


The NB1 has this in its manual, but the NB2 does not.

 

I believe the installation guide is where this is listed. For NB2, it should be this: MegaSquirtPNP by DIYAutoTune.com . Look at the bottom of the page for the pinouts

As far as your charge light goes, are you talking about the battery light? If so, your problem is likely what I describe here: https://www.miataturbo.net/megasquir...ht-wot-100793/