Need help wiring a Holley In Tank Fuel Pump / Regulator CorvetteForum

I've never used the ECU's fuel pump trigger wire to directly power the pump (even if it is less than 10 amps). I've always used a separate relay (shown below) because that green wire is still only 14 AWG. The 2nd fuel pump relay is used so the fuel injectors aren't subjected to the pump's amp draw.. This manual contains information and diagrams related to wiring most Holley EFI products including ECU's, ignition systems, nitrous. A2 Fuel Pump Out (+12v) (10A Max) B2 IAC A Hi A3 Input #2 (F52THG) B3 Output #4 (G P-) A4 Input #4 (F5G) B4 Injector F Output A5 TPS Input B5 Injector G Output.

Please be aware that this is a community forum. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel.. With this information you already know the large blue wire is the load/power to fuel pump (pin 87). The Red is the power supply from the battery.. 2. Connect the fuel pump (red lead) to a 12-volt ignition source. In this line, add an in-line fuse holder and a 7.5 amp fuse. 3. To complete the installation, connect the ground (black lead) to the battery. Figure 2 WIRING THE FUEL PUMP WITH A RELAY: NOTE: You will need Holley Fuel pump relay kit P/N 12-753 or equivalent 4-wire relay. 1.