Fuelab 40401 Reduced Size EFI In-Line Fuel Pump - Manual (Page 3)

CIRCUIT
BREAKER
or FUSE
(20-25A)
C
NO
NC
FUEL PUMP
POWER RELAY
(25+A RATING)
(12-14ga)
(12-14ga)
VEHICLE BATTERY
(12-16 Volt System)
VEHICLE ELECTRICAL SYSTEM
IGNITION
SWITCH
or ECM
(12-
14ga)
(16-20ga)
FUSED
CIRCUIT
(1-5A)
regulations.
110020275-1, Rev A Page 3 of 6
(Electrical components shown are not supplied with Fuel Pump)
MAIN WIRING SCHEMATIC DIAGRAM:
SPEED CONTROL SCHEMATIC DIAGRAMS:
pump at continuous reduced speed. The reduced
speed is preset, with the performance curve
Attach switch and wiring as shown to the right, to operate pump at
pulsed signal may also be used to control pump speed. See examples below for a method suitable for your application.
Example 1: Continuous Maximum Speed
speed control terminal has greater than 2.5V (Approx), the mode of operation is in continuous maximum speed. A
terminal has less than 1/4V (Approx) applied to it, the mode of operation is in continuous reduced speed. When the
The speed control terminal (Yellow Center Lug) must have voltage or a signal applied to it. When the speed control
continuous maximum speed while switch is in the open position
Speed”.
Example 2: Continuous Reduced Speed
Pump Certification as “Maximum
curve was recorded as shown on the
pump at continuous maximum speed. The performance
Attach no wiring to speed control terminal, to operate
(position as shown in diagram). When the switch is in the closed position
(on), the pump will operate in reduced speed mode. To reverse the
desired switch action, refer to Example 4. Switch type can be a relay or
switching based on pressure or other means. Current draw through this
circuit is extremely low (much less than 1 amp), so a very low current rating
for this switch can be used. Use the diagram to the right as a guide to
properly wire this example. Reduced speed is recommended for
Example 3: Switch to Ground Speed Changing
and reduced speed.
switching between maximum
See Examples 3 and 4 for
pressure is below 60 PSIG.
adequate for application and outlet
flow rate at reduced speed is
Yellow Lug. Use Example 2 if the
negative terminal (Black Lug) and
See schematic, attach wire between
shown on the pump certification.
outlet pressures under 60 PSIG.
Attach a jumper wire as shown below, to operate
Reference Sheets 3 and 4 for schematic wiring diagram examples. Use electrical components as described including
electrical connectors that are appropriate for the operating environment of the fuel system, whether its use in street,
racing, or marine applications. Electrical connectors for the power leads must be capable of high current draw,
note all connections, wire and component rating requirements herein. Solder and use shrink wrap for wire splices
for extra reliability. Use of a check valve in fuel system as shown in plumbing diagram will maintain fuel pressure at
normal levels during engine starting and may be required depending on the wiring of main relay control circuit.
OEM and some aftermarket ECMs have fuel pump relay control outputs can be used that will turn off fuel pump
during engine starting, requiring check valve use. If the fuel pressure does not maintain during engine starting,
ensure fuel pump is energized while starting. Main wiring schematic diagram, below shows the control of relay by
ignition switch. This source can be changed as described, or by a toggle switch. Some forms of racing have
specific rules regarding electrical switching of fuel pump. Consult appropriate racing guidelines, rules and
Electrical Planning Notes:
Fuelab Model:
40401-c (-sp)
FUEL PUMP
(16-20ga) Device or Resitor Link must be used as shown below,
for proper operation.See Speed Control Schematic Diagrams
for wiring of speed control (Yellow Lug).
JUMPER WIRE
NO JUMPER WIRE
OR DEVICE
PUMP OPERATES
AT MAXIMUM SPEED
WITH SWITCH POSITION
SHOWN (OPEN).
CIRCUIT
BREAKER
or FUSE
(20-25A)
C
NO
NC
FUEL PUMP
POWER RELAY
(25+A RATING)
(12-14ga)
(12-14ga)
VEHICLE BATTERY
(12-16 Volt System)
VEHICLE ELECTRICAL SYSTEM
IGNITION
SWITCH
or ECM
(12-
14ga)
(16-20ga)
FUSED
CIRCUIT
(1-5A)