You will need holley fuel pump relay kit pn 12 753 or equivalent 4 wire relay. Holley performance products has written this manual for the installation of the pro jection 4d and 4di fuel injection system.

F Body Lt1 5 7l Fuel Pump Amp Wiring Harness Kit Racetronix
Holley power tap wiring diagram. All 0 5v sensors require a 5 volt reference voltage and a sensor ground. From connectors and pins to wire loom and tools. Before punching or drilling a hole in the firewall make sure you know what is on the other side. 3 11 important wiring dos and donts. We have everything you need to build or service your holley efi powered machine. We have one goal to provide you a one stop solution for all of your wiring components needs.
Featuring items from multiple holley brands the wiring shop is your one stop place for everything needed to work on your aftermarket fuel injection or high performance ignition system. This manual contains information and diagrams related to wiring most holley efi products including ecus ignition systems nitrous systems watermethanol injection systems sensors and more. Whether youre building a harness from scratch replacing an old connector or installing a new sensor holleys wiring shop has the tools and equipment you need. Mount relay on firewall of engine compartment using a sheet metal screw. Disconnect the cables from the battery. Wiring the fuel pump with a relay.
Introducing the holley efi wiring shop. Wire the signal output wire from a 0 5v sensor to the appropriate pin using the holley wiring diagram. Black nylon braided wire loom from 18 to 2 and every connector pinssealstpa included we utilize on our main harnesses are now. Please read all the warnings notes and tips as they contain valuable information that can save you time and money. This manual contains all the information needed to install this system. These need to be properly wired to each 0 5v sensor used.
Each holley efi connector that has 0 5v inputs has its own 5 volt reference voltage output and sensor ground.