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[SDT1DYI]

Originally Posted by Lenny5160_v2

Couldn't you test it, possibly without the car even running, with the Graphview software showing you which/how many retards are active when applying 12v to each wire?

I'm not sure exactly how to do that.
Running the engine and having three separate switches with a 12V power source and then with a Timing light , put 12V to each wire separately to verify timing changes. Then you would know for sure does each wire operate independently of the other or not.
Someone at MSD has to know the answer that would save the time, expense and effort of doing this.