Holley Red Fuel Pump Wiring Diagram. There are 2 methods to wire the pump. The diagram is color coded per circuit and only a few things may need to be said.
Mount relay on firewall. Part 12 801 1 3 reviews. Needed for nitrous activation boost etc the second pump can be activated.
Before punching or drilling a hole in the firewall make sure you know what is on the other side to avoid puncturing equipment such as heater cores air.
You will need holley fuel pump relay kit pn 12 753 or equivalent 4 wire relay. Holley blue fuel pump wiring diagram. The switch is activated by engine oil pressure and will break the circuit and shut the pump off if the engine should stall for any reason. Connect the black pump wire to the vehicle ground using an oil pressure safety switch with a fuel pump.