I built a jumper harness to swap a 2G flashable ECU into my 90 Talon AWD. I know it's not a GVR4, but the wiring should be the same.
I can't find a list of which wires on the OBDII port need to be connected and to where they be connected. Currently, I have OBDII pin 1 attached 2G ECU pin 56 with the yellow wire and OBDII port 7 to 2G ECU pin 62 with the pink wire according to the wiring guide I found.
What else needs to be connected?