Yes, your thread over on DIYEC was the first specific useful info I found when trying to decide which EV inverter I was going to go with for this project. :)

Kiwifiat and Coleeasterling are working on another version of the same kind of thing, to hopefully make a kind of "kit" if I understand ...

The inverters arrived, so the pin is now identified:
https://endless-sphere.com/forums/viewt ... 1#p1547401

Haven't got any further than that yet.

This post:
https://openinverter.org/forum/viewtopic.php?f=10&t=575&start=10#p7771
notes that it is possible to use the reset pin of the CPU of an OEM inverter to disable that cpu, to allow wiring in an external brain control, presumably without having to hack at the traces and wiring (as much, at ...

*Deleted on request of the author*