Instruction Manual

P/N: 4GL020-010
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08OCT08 v5.0(99-07 GM Trk (4GLv5.0))
10
Fig. 9-a
9. FUEL PUMP WIRING AND INSTALLATION (All 2000-2002 Models and 2003
6.0L Models Only)
A. Mount the supplied fuel pump relay onto the
FMU bracket as shown in Fig. 9-a.
B. Connect the red 12-gauge wire from terminal #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 terminal as shown in Fig.
9-b. In order to reach the terminals, the fuse box
cover must be unsnapped from the base and
raised for access. (See Fig. 9-b.)
C. Feed the yellow wire from relay terminal #85 to
the fuse box (electrical center) on the driver’s
side of the engine bay. Route the wire to the
stock fuel pump relay and connect using the
supplied fuse tap. Bend the fuse tap as shown
in Fig. 9-c.
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 lter on the
driver’s side inner frame rail under the door.
Secure as necessary to avoid heat and sharp
edges.
Fig. 9-b
Fig. 9-d
Fig. 9-c
RED WIRE FROM VORTECH SUPPLIED
RELAY TERMINAL #30 ATTACHES HERE
YELLOW WIRE FROM VORTECH SUPPLIED
RELAY TERMINAL #85 ATTACHES HERE
86
IGNITION
RELAY
SIDE VIEW
85
87
30
FUSE TAP
MODIFICATION
BEND UP 90°
BEND UP 90°
IGNITION
RELAY
MODIFIED
FUSE TAP
INSTALLED MODIFIED
FUSE TAP
BOTTOM VIEW
RELAY
87
87A
86
85
30
(+)
BATTERY
TERMINAL
(+) TERMINAL
ON T-REX
FUEL PUMP
GROUND