Paxton Superchargers GM 8.1 HD Truck/SUV - Manual (Page 31)

11-1
P/N: 4809642
©2004 Paxton Automotive
All Rights Reserved, Intl. Copr. Secured
28SEP04(4809642 v1.2)8.1GMTruck
Section 11
FUEL PUMP WIRING AND INSTALLATION
A Remove the hood support from the driver’s
side of the vehicle. Remove the plastic cover
from the power distribution center. Unsnap
the plastic casing surrounding the fuses and
relays. Mount the supplied fuel pump relay
onto the lower plastic area. (See Fig. 11-a.)
Fig. 11-a
B Connect the red 12-gauge wire from termi-
nal #30 to the supplied fuse holder using the
supplied butt connector. Install a yellow ring
terminal on the other end of the fuse holder
and bolt to the fuse box power supply termi-
nal as shown in Fig. 11-a.)
Fig. 11-b
C Feed the yellow wire from relay terminal
#85 into the fuse box. Route the wire to the
stock fuel pump relay and connect using the
supplied fuse tap to terminal #86 on the
relay. Bend the fuse tap as shown in Fig.
11-d.
D. Run the black wire from terminal #86 on the
fuel pump relay to ground.
E. With the long red 12-gauge wire connected
to the fuel pump relay terminal #87, route
the free end down to the area near the fuel
filter on the driver’s side inner frame rail
under the door. Secure as necessary to avoid
heat and sharp edges.
11.2 FUEL PUMP INSTALLATION
A. Remove the fuel line from the outlet (front)
of the fuel filter. Remove the tube from the
plastic retainer holding it so that it can be
rotated freely. Some models may vary
slightly from the photo. Follow the same
procedure, taking care to mount the pump so
that the hard line is not stressed. (See Figs.
11-b, 11-c.) Vehicles may vary from photos.
B. Making sure the O-ring is seated on the
threaded end of the supplied fitting, install
into the outlet (front) of the fuel filter and
tighten.
C. Making sure the O-ring is seated on the tube
end of the fuel line (removed from the fil-
ter). Thread the bump tube into the fitting
installed on the outlet of the fuel pump and
tighten.
D. Route the free end of the hose connected to
the fuel pump inlet to the fitting previously
installed on the fuel filter outlet. Use the
supplied hose clamp to secure the hose on
the barb fitting. Try to make the bends as
large as possible, so as to avoid kinking the
hose. Secure the hose using the wraps and
tighten all of the hose clamps.
E. Install the supplied adel clamps onto the fuel
pump and mark holes to be drilled for the
supplied 10-24 x .5" hardware. Drill an
13/64" hole at the location. Using the sup-
plied black 12 gauge wire with yellow ring
terminal connector, install one end under the
adel clamp and the other end of the ground
wire to the negative (-) terminal on the fuel
pump.
YELLOW-FUEL AND WATER
PUMP TRIGGER WIRES
FUEL AND WATER
PUMP RELAY MOUNT-
ING POSITIONS
FUSE BOX POWER SUPPLY
11.1 FUEL PUMP WIRING