Hummer H1 Service Manual page 1024

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TRAILER TOWING
TRAILER WIRING
CONNECTOR
DUMMY PLUG
Figure 13-42: Trailer Wiring Connector and Dummy Plug Location
Trailer Jumper Harness
Hummer vehicles come from the factory equipped for easy in-
stallation of the trailer jumper harness. The trailer jumper har-
ness may be installed as part of the factory trailer towing
package or an add-on kit. Body wiring harnesses are designed
with a trailer wiring connector at the rear of the vehicle body
above the rear bumper (Figure 13-42). Rear bumpers are man-
ufactured with a cut-out for the trailer harness receptacle.
Installation
1. Insert the trailer jumper harness through the rear bumper
cutout and bolt the receptacle in place (Figure 13-43).
2. Remove the dummy plug and plug the trailer jumper
harness connector into the trailer wiring connector.
Trailer Brake Controller
Spare wires have been provided in the body harness and routed
from the instrument panel/fuse box area to the trailer connector
at the rear of the vehicle. Install the trailer brake controller us-
ing the manufacturer's instructions.
The following information about the Hummer electrical system
is necessary for installation:
05745159
REAR OF VEHICLE BODY
ABOVE REAR BUMPER
1. Three shrink-wrapped wire leads can be found under the
instrument panel (Figure 13-44), they are:
a. Yellow—power
b. Red—stop light signal
c. Dark blue—trailer brake
TRAILER
WIRING
CONNECTOR
Figure 13-43: Trailer Jumper Harness Mounting
Accessories
FRONT OF VEHICLE
BODY WIRING HARNESS
TRAILER JUMPER HARNESS
GASKET
REAR BUMPER
13-19
RECEPTACLE