I would go ahead and replace the Black ICM with another Black ICM. Make sure they do not sell you a Gray one.
If that does not do it then itwould have to be wiring. Either you have a wire shorting to ground or an open wire.
I hope you are leaving the PCM Computer unplugged during all of these test for spark.

It is also possible that they sold you a bad distributor. One poster said he had to take three or four back before he got a good one.

Here are diagrams of your system "H" if you need them.



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