Buick Enclave Owner's Manual page 262

Black: Ground
White/Green: Back-up Lamps
Red/Green: Battery Feed
Blue: Trailer Brake*
*The fuse for this circuit is installed
in the engine compartment fuse
block, but the wires are not
connected. They should be
connected by your dealer or a
qualified service center.
If the back-up lamp circuit is not
functional, contact your dealer.
If a remote (non-vehicle) battery is
being charged, press the Tow/Haul
Mode button, if equipped on the
center stack. This will boost the
vehicle system voltage and properly
charge the battery. If the trailer is
too light for Tow/Haul Mode, turn on
the headlamps (non-HID only) as a
second way to boost the vehicle
system and charge the battery.
Electric Trailer Brake Control
Wiring Provisions
These wiring provisions for an
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The body
harness, inside the front driver side
instrument panel, contains blunt cut
wires below the headlamp switch for
the electric trailer brake controller.
The harness contains the following
wires:
Blue: To Trailer
Red/Black or Red/Blue:
Battery Feed
White/Blue: Brake Apply Signal
Black: Ground
The electric trailer brake controller
should be installed by your dealer or
a qualified service center.
Driving and Operating
Conversions and
Add-Ons
Add-On Electrical
Equipment
Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. See Malfunction
Indicator Lamp (Check Engine
Light) 0 140. A device connected
to the DLC such as an
aftermarket fleet or
driver-behavior tracking device
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle s
systems.
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