Heavy-Duty Trailer Wiring Harness
Package
Your vehicle is equipped with the seven-wire
trailer towing harness. This harness with a
seven-pin universal trailer connector is attached to
a bracket on the hitch platform.
The seven-wire harness contains the following
trailer circuits:
•
Yellow: Left Stop/Turn Signal
•
Dark Green: Right Stop/Turn Signal
•
Brown: Taillamps
•
White: Ground
•
Light Green: Back-up Lamps
•
Red: Battery Feed*
•
Dark Blue: Trailer Brake*
*The fuses for these two circuits are installed in
the underhood electrical center, but the wires
are not connected. They should be connected by
your dealer or a qualified service center.
If you are charging a remote (non-vehicle) battery,
press the tow/haul mode button located at the
end of the shift lever. This will boost the vehicle
system voltage and properly charge the battery. If
the trailer is too light for tow/haul mode, you
can turn on the headlamps as a second way to
boost the vehicle system and charge the battery.
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Summary of Contents for 2007 Yukon XL
Page 6: ...These are some examples of symbols that may be found on the vehicle 6...
Page 40: ...Put someone on it Get it up to speed Then stop the vehicle The rider does not stop 40...
Page 114: ...NOTES 114...
Page 202: ...Instrument Panel Overview United States version shown Canada similar 202...
Page 358: ...NOTES 358...
Page 591: ...Engine Drive Belt Routing 591...