Fried ECM

wot440 said

Thanks for all your effort, and all this information. I did pick up a NAPA ignition, switch,as I have no faith in the AZ parts that are in there now. Will be checking voltage as I go, at the old switch, and the new one. Also the amp meter has been bypassed. The engine currently runs. I put the Pertronics dist. back in yesterday, just to get the car back into the garage as it died in the road at the bottom of my uphill driveway.

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Good chance that bypass is part of, if not all of the problem. Not needed unless there are more mods you haven't mentioned like EFI and electric fans. I'd put it back to stock and then troubleshoot. If there is a bad bulkhead connector, you can always run a parallel wire.
If you troubleshoot the way it is, you'll have to draw it out the way it is. Then you can figure it out. Same methods as Del and I have been describing, but applied to the flow paths on your car.