I got rid of the green connectors (B75/B76) altogether by soldering those wires together and put a switch at the jumper connector (B125/B126). So whenever I want to reflash the ECU, I just flip that switch to close the connection. All this does is ground a pin on the ECU (B134) orange wire at pin A14. Does that make sense?

And lsfourwheeler is right, you have to connect to the ECU within the first second or two of supplying power to it. I usually get the screen ready, turn the key (without cranking the motor) and click connect right away to read/right the ECU.