Hummer H1 Service Manual page 1037

13-32 Accessories
3. Route the harness from the ballast along the passenger
side of the radiators, under the foam hood seal, to the
passenger side light. The driver side light harness routes
from the ballast across the top of the radiators, under the
foam hood seal, and down the driver side of the radiators
to the light. The harness connecting the ballasts and the
relay should be routed from the ballasts across the top of
the radiators, under the foam hood seal, to the relay mount
point at the hood safety lock. From the relay, the power
and ground wiring connects to the power distribution studs
on the firewall and to the ground stud next to the exterior
fuse box. The blue wire routes through the ignition
interlock cable grommet in the cowl to the switch. The
white (power) and black (ground) wires connect the switch
to the orange high beam power wire near the turn signal
switch and the instrument panel ground point under the
dash.
4. The red wire (Figure 13-70) containing a 30-amp in-line
fuse, supplies power to the relay on terminal 30 and
connects to the power distribution stud (+) on the firewall.
The blue wire connects terminal 86 of the relay to either of
the outside terminals on the switch. The red wire connects
terminal 87 of the relay to the ballasts. The black wire
connects terminal 85 of the relay and the ballasts to the
ground distribution stud (-) next to the exterior fuse box.
The center (ground) terminal of the switch connects to the
instrument panel ground point under the left side of the
dash. The white wire connects the remaining outside
terminal of the switch to the orange high beam power wire
near the turn signal switch (See Figure 13-68).
SWITCH
WIRE
T-TAP
T-TAP
14 GAUGE
ORANGE WIRE
COVER
Figure 13-68: Switch Power Connection
5. Bend the relay tab approximately 90 degrees to the relay
and mount the relay to the hood safety lock bracket with
the existing screw (Figure 13-69). Mount the relay with
the wires facing down to prevent moisture intrusion into
the relay.
_____________________________________________________________
9-S13-029
6. Mount the switch under the dash on the left side of the
steering column using the panel provided.
a. Use the closeout panel mount screw nearest the left
side of the steering column for the left side of the
switch panel and drill the right side switch panel
mount hole. Mark (using panel as template), center
punch and drill a 5/64" hole for mounting of the
panel.
b. Mount the switch panel to the dash with the screws
provided. Drill a 5/16" hole in the closeout panel
forward of the switch for the wires to pass through the
closeout panel.
NOTE: It is easier to connect the wiring to the switch termi-
nals before snapping the switch into its hole.
RELAY
CTIS
COMPRESSOR
Figure 13-69: Relay Mounting Point, Hood Lock
RELAY
86
RED WIRE
87
30
85
30 AMP
FUSE
BLACK WIRE
POWER
DISTRIBUTION
STUD ON FIREWALL
GROUND STUD
AT EXTERIOR
FUSE BOX
BLACK WIRE
Figure 13-70: Wiring Schematic
HOOD
SAFETY
LATCH
9-S13-003
Bracket
SWITCH
LIGHTS GROUND
BLUE WIRE
INSTRUMENT
PANEL
GROUND
RED WIRE
ORANGE WIRE
BALLAST BALLAST
TURN
SIGNAL
SWITCH
KC HID KC HID
®
POWER
3 AMP
FUSE
HIGH
BEAM
POWER
7-S12-149.4