Need electrical help with new RetroTek EFI

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I have just finished up an engine swap and went with the RetroTek EFI. I could not get it started. But, I think I have identified the problem. I'm getting spark, but not fuel.

The EFI is not firing the fuel injectors while cranking. The RetroTek instructions are very clear that the computer needs 12 volts during cranking. I put my volt meter on and I have 12.3 volts while in the "On" position, but it drops to 10.3 - 10.5 during cranking.

I have tried two different ignition hot leads:
- first from my Painless circuit block (20 amp fuse), clean circuit (nothing else on circuit). The volts are 12.3 in the on position, but went straight to 0.00 during cranking.
- Then I used a jumper lead from the "I" terminal on the solenoid - 12.3 in the "On" position, 10.3 during crank.



Where is the best place to pick up a solid 12v, ignition lead?

Thanks,
Tim