too bad im no expert at all
. i was "painting by numbers" on my build
so im probably not helping much.
i looked at that link and i see the pin 1 12volt supply wire it says "This connects to a switched 12 Volt supply. Use the ignition switch to control a relay that provides 12 volts to both the MicroSquirt® and the injectors."
it seems like we are really close though.... your ign switch pin 110 just needs to power up the mpi relay pin63,66
and then 12v power should be available on pin 107 for powering your microsquirt. thats what mine does except that i have that spot on the board for relay in and out where the ign switch wire goes in and then 2 wires go out to mpi relay 63,66. and finally i power my megasquirt from pin 107 after the mpi relay is energized.
so my interpretation to what there saying above is almost like you have to make that happen on the car (since you dont have that little relay board spot like i do) and then you can take power for your unit from pin 107?