That's just attaching the line lock wire in parallel to the 2 step input on the CDI box.
The Terminator X has a built in 2 step, but I'd still recommend the CDI box anyway.
I try to stock both the PF4 (and 35 # injectors) and also just the Edelbrock EFI intakes, and the Terminator X that can work with any of them. Because both systems work so well. But I typically like the Edelbrock intakes (when available) better than the Holley intakes, but not always.