Electrical Planning Notes:
Reference Sheet 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 (unless high quality crimping is performed). 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 regulations.
MAIN WIRING SCHEMATIC DIAGRAM:
(Some electrical components shown are not supplied with Fuel Pump)
Fuelab Model:
4
0
40
2
-c
FUEL
PUMP
(16-20ga) Device or Circuit can be used as shown below,
for proper operation.See Speed Control Schematic Diagrams
for wiring of speed control (Yellow Lug).
Example 3: Switch to Ground Speed Changing
cooling may be required using
110020276-1, Rev C Sheet 3 of 6
switching between maximum
See Examples 3 and 4 for
considered continuous duty.
maximum speed may cause over-
Yellow Lug. Use Example 2 if the
heating and therefore may
damage fuel pump. Additional
shown on the pump certification.
this mode of operation is
adequate for application. Using
flow rate at reduced speed is
The speed control terminal (Yellow Center Lug) can have voltage or a signal applied to it. When the speed control
terminal has less than 0.25V (Approx) applied to it, the mode of operation is in continuous reduced speed. When the
speed control terminal has greater than 1.65V (Approx), the mode of operation is in continuous maximum speed. A
Attach no wiring to speed control terminal, to operate
Example 1: Continuous Maximum Speed
pulsed signal may also be used to control pump speed. See examples below for a method suitable for your application.
negative terminal (Black Lug) and
demand for extended periods.
Example 2: Continuous Reduced Speed
operating with low engine
maximum speed only while
and reduced speed.
pump at continuous maximum speed. The performance
curve was recorded as shown on the
Pump Certification as “Maximum
Speed”. Use Example 1 for racing
specific applications, or short
interval use. Use in continuous
SPEED CONTROL SCHEMATIC DIAGRAMS:
See schematic, attach wire between
Attach a jumper wire as shown below, to operate
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
continuous maximum speed while switch is in the open position
(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 during long
periods of low engine fuel demand conditions to avoid fuel system heat
build-up.
NO JUMPER WIRE
OR DEVICE
CIRCUIT
SWITCH
(12-24 Volt System)
-
+
NO
NC
C
or FUSE
(30A)
BREAKER
FUSED
(16-20ga)
(30+A Rating)
(1-5A)
(8-10ga)
or ECM
POWER RELAY
FUEL PUMP
CIRCUIT
IGNITION
VEHICLE BATTERY
VEHICLE ELECTRICAL SYSTEM
PUMP OPERATES
AT MAXIMUM SPEED
WITH SWITCH POSITION
SHOWN (OPEN).
JUMPER WIRE
