MODE 2 – Constant Full Speed
MODE 3 – Constant Low Speed
MODE 4 – Switched Speed On - Demand from Low to High
Mode 4 can be activated by any relay or switch providing 5VDC or higher (system voltage up to 19VDC is fine) to
the control wire. A relay for this purpose could be activated using the programmable output from a tunable ECU, or
via a boost Hobb’s or WOT switch connected to 12VDC to name a few examples.
30. After all wire connections are made, attach a suitable fuel pressure gauge to the fuel system Schrader valve, fuel
rail or fuel pressure regulator test port. Examples:
Aeromotive P/N
15632
0-15 PSI (1 ½”) Fuel Pressure Gauge
Aeromotive P/N
15633
0-100 PSI (1 ½”) Fuel Pressure Gauge
Ensure that any spilled fuel and any fuel-soaked shop towels are cleaned up and removed from the vicinity
of the vehicle.
CAUTION: While performing the following steps, if any fuel leaks are detected, immediately turn the ignition
to OFF, remove any spilled fuel and repair the leak(s) before proceeding!
31. Turn the ignition to ON
without starting the engine
, allow the pump to run for several seconds and check the fuel
pressure. If there is no pressure, turn the ignition to OFF, wait one minute, then turn the ignition to ON and recheck
the pressure. Repeat this ignition OFF and ON procedure until the gauge registers pressure or you detect a fuel
USER SUPPLIED
GND
USER SUPPLIED
+12VDC
GND
USER SUPPLIED
+12VDC
GND
Switch
+12VDC
