Searching for 12v switched power after ditching ballast and installing aftermarket electronic ignition

Thanks for your reply. I agree that this is not an A-body, and I know things are different, but the input is what I was after.

In terms of a trigger, I need a trigger for the auxiliary fuse block I installed, not just the CD ignition system. I am aware that the heavy red and black are what actually power the Mallory box, but I still need switched power for it and the other circuits I am running off the fuse block. Is what you are suggesting as a trigger to be used to trigger the fuse block?

The only wires I have removed are in the engine harness, and those attached to ballast and electronic ignition. Nothing from the actual ignition switch inside. I will take a look at my bulkhead and find the ignition run and start wires and join them (Assuming they are the ballast wires as mentioned earlier by Professor Fate.

For reference, here is a pic of the ballast resistor in the car before removing the harness

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