12. Using the enclosed #16 black wire, route the wire from the Manual Override Switch to a clean chassis
ground. The override function will allow the pump to run at maximum voltage overriding the tach signal
trigger.
13. Using the attached wiring schematic as a guide, recheck all wires for proper routing. Again, make sure
all wires are routed clear of all moving parts and exhaust components. Protect wires from cutting and
abrasion as necessary.
14. Using the enclosed wire ties, secure all wires to the vehicle chassis. Do not secure any wires to any
suspension or moving drive train components!
15. Using the enclosed crimp type electrical connectors, complete all wire connections. Make sure you
follow the PSC connection layout shown on the wiring diagram.
16. Reattach the negative battery cable.
17. Depending on which setup you are using, do one of the following.
•
If you are using an ECM to control the fuel pump, turn the ignition key to “ON”. The fuel pump
should run at full speed for several seconds, then shut off.
•
If you are using a toggle switch to control the fuel pump, switch it to “ON”. The fuel pump should
run for several seconds at full speed, then go to low speed and stay there until the PSC is
activated via the tach signal or manual switch.
If the fuel pump does not run as described above, recheck all wires and connections for proper
installation. Make sure the Manual Override Switch is in the “OFF” position.
18. Once the fuel pump runs properly at initial system startup, start the fuel pump and vehicle engine.
Several seconds after starting, the fuel pump should switch to low speed.
19. Once the pump switches to low speed, switch the manual override switch (if installed) to “ON”. The
pump should immediately go to full speed. The green LED labeled SWT should be lit. Switch the
manual override switch to “OFF”.
20. While the engine is running, the yellow LED labeled TACH should be flashing, indicating the PSC is
getting a tach signal.
21. With the vehicle transmission in “PARK” or “NEUTRAL” and the parking brake set, have someone
carefully rev the engine to 2500 RPM (Assuming Engine is a 8 cylinder). For 6 cylinder engines the
preset RPM will be around 3300 RPM and 5000 RPM for 4 cylinder engines. The pump should go to
full speed and the green LED labeled FULL should be lit, while the engine is revved up. Allow the
engine to go back to idle. The pump should go back to low speed.
22. Shut the engine and fuel pump off. The pump should slow down and stop within a few seconds.
