Found and old picture of my ignition wiring. Looks like you have everything connected correctly. The ICM does run on the 12v side of the ballast resistor.
If you got the lisle spark tester, the lead is reversible. I suspect most are. You can pull the section of plug wire off of the tester and flip it around, with the 90 degree boot connected to the tester and the straight end on the spark plug.