EFI help needed, Wiring questions.

67Dart273 said
Relays are good even on stock, non EFI cars. If you "cut" (electrically) the blue "run" wire as it comes into the engine bay, use the firewall end to fire a relay, feed the other end from the load contacts, and pull power off say, the starter relay stud through a fuse/ breaker, this will normally cure the VR over voltage problems caused by harness voltage drop

I agree, wire in a relay for both your switched and full time power needs for the Holley. On one car I used a smaller fuse block (6-8 position), with the voltage fed to it via a larger gauge wire which is controlled via a relay, for the both the switched/full time.

Here's a quick visio drawing a made for the poster's reference. I didn't match the colors for the switched or fulltime wires to your vehicle since I don't know what you have.