Mallory Ignition ACCEL Digital Fuel Injection Engine Management System 74030 - Manual (Page 15)

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ACCEL/DFI
VII. FUEL PUMP MOUNTING
AND HIGH PRESSURE LINE INSTALLATION
ACCEL DFI currently has two high pressure fuel pumps
available: part number 74701, an external mount fuel pump
which can support up to 450 horsepower @ 45 PSI, and part
number 74702 which can support up to 840 horsepower @
45 PSI. This fuel pump can be mounted in the fuel tank or
on the frame rail. You can use part number 74710 to mount
this pump onto your frame rail. Regardless of the fuel
pump used, be sure to mount your fuel pump near the tank
at a point of fuel level and in a protected area. System
components must also be protected and shielded from
exhaust and engine compartment heat as well as from
potential road damage.
FUEL PUMP WIRING
The fuel pump requires a +12 volt source. If your vehicle
was originally an EFI vehicle and already has a fuel pump
installed, you still MUST use the ACCEL DFI wiring.
Connect the +12 VDC side of the fuel pump to the ACCEL
DFI main wiring harness, using the red wire with white
tracer. The fuel pump relay is already an integral part of the
main wiring harness and is controlled by the ECM, therefore
no wiring is necessary for the relay. A pump will draw
between 4 and 8 amps of current depending on size and
fuel system pressure, so 14 gauge wire should be used from
the pump to the red wire with white tracer. Also, be sure to
solder the connection between these two wires. The ground
for the fuel pump can be at any clean, paint-free point on
the chassis to the negative (-) terminal of the fuel pump.
Make sure that wiring between the fuel pump and the
engine compartment does not hang below the vehicle, interfere
with rotating parts, or become exposed to excess heat.