Vortech 1993-1996 5.2L Grand Cherokee - Manual (Page 15)

10A. AUXILIARY FUEL PUMP
(1993-1995 Models Only)
A. An additional fuel pump is supplied to insure
that sufficient fuel is available to the engine.
This pump is mounted on the left side inner
fenderwell beneath the windshield washer
reservoir and the brake master cylinder.
B. Open, then close the fuel filler cap to vent
any residual pressure. Disconnect the stock
fuel supply hose where it enters the fuel rail.
C. Following the graphic on the next page,
insert hose assembly "A" into the factory
feed line until it snaps into place. Route the
hose assembly along the rear firewall near
the base of the brake booster.
D. Attach the Vortech fuel pump to the vehicle
with the outlet pointing forward using the
supplied adel clamp and #10 hardware. See
photo at right.
E. Use the supplied length of short black wire
to ground the fuel pump.
F. Mark and drill a 1/8" hole and mount the
supplied relay on the passenger side inner
fenderwell near the fuse box. Connect the
short black wire from the relay terminal #86
to ground.
G. From relay terminal #85, route the yellow
wire to the bottom of the underhood fuse
box. Tap the yellow relay wire into the factory
fuel pump relay wire connected to pin #87
on the factory fuel pump relay (the wire can
be various colors but usually is green with a
white stripe) using the supplied wire tap.
Double check the wire choice by using a test
light to confirm that when the key is initially
turned on, the wire has power for 4-8
seconds and then turns off.
H. Connect the long red wire from relay terminal
#87 to the (+) terminal on the fuel pump.
9
WARNING: Take great care to
minimize fuel spillage and always have
a second person stand by with a fire
extinguisher as a precaution.
NOTE: On ABS equipped vehicles,
the pump mounting position may vary
slightly.
AUXILIARY
FUEL PUMP
FUEL
MANAGEMENT
UNIT
GROUND
87
87A
30
86 85
(+) FUEL PUMP
LUG FROM BATTERY
TO FUSE PANEL
UNDERHOOD
RELAY
GREEN/WHITE @
PIN #87 OF
FACTORY FUEL
PUMP RELAY