So I'm in the process of installing a Holley terminator x into my 92 Z28 and have a few questions before I go and splice into any wiring. I have read multiple of the LS swap how-to's and think I have the basics down, just want to make sure I'm doing things right.
First, the Holley calls for a switched power source, which if I understand correctly, would be the pink wire out of the c100 connector (f4). However, the transmission harness calls for another 12v switched source and my question is, can I tap into the C207 for that switched power source? If so, where should I tap in? Also, any tips from anyone that has installed a Holley EFI would be greatly appreciated.

 

You can use any switched power source.

When I build my Harnesses/ Bussed Electrical Centers (Fuse and Relay Panels)...
I take that 12 AWG Pink Wire and use it to trigger a bank of Relays that need to be triggered with Ignition ON.

 

This is what I did and it worked out really well.