Help me with spark?

[Mr. Moeschberger]

I have a 1968 Suburban. I've got the LM7 installed and have been chasing spark problems for a minute. I've posted on Reddit and over at LS1tech, but thought you all might have an idea. Here's what I posted over there:

I'm trying to get an 04 LM7 to run. I had it idling, but had no throttle. That turned out to be I had a 6 pin cable to the TAC instead of the 9. Before I figured that out, I was checking the wiring to the Throttle Body for breaks. Now I have that pedal cable swapped, and I can hear it moving the throttle body, but I don't have spark.

Before I make a bigger mess out of this, can someone please confirm what kind of power I should be seeing at the connectors for the banks of coils? I currently (pun firmly intended) see 12V from the pink to every other wire in the connector with the key in the run position. No other combination shows volts. Is that right or have I shorted something in that harness to ground? (my understanding is that spark is commanded by the PCM grounding but I don't know what it should look like in the run position)