Trailer Wiring; Electric Trailer Brake Control; Wiring Provisions- Page 245

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-

13527524) - 2020 - CRC - 9/5/19

244

Driving and Operating

Trailer Wiring

The trailer wiring harness (if
equipped), with a 7-pin connector is
located at the rear of the vehicle,
and it is tied to the vehicle's frame.

If the vehicle is not equipped with a
7-pin trailer connector, the body
harness has provisions to connect a
trailer harness and a 7-pin trailer
connector which is available through
your dealer.

Use only a round, seven-wire
connector with flat blade terminals
meeting SAE J2863 specifications
for proper electrical connectivity.

The seven-wire harness contains
the following trailer circuits:

1

Stop/Turn
Signal Left

Yellow/Blue

2

Tail/Parking
Lamps

Gray/Brown

3

Reverse Lamps

White/
Green

4

Battery Feed

Red/Green

5

Stop/Turn Signal
Right

Green/
Brown

6

Electric Trailer
Brake*

Blue

7

Ground

Black

* Circuit powered by electric trailer
brake control wiring provisions.

Electric Trailer Brake Control
Wiring Provisions

Wiring provisions for an aftermarket
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The
harness contains the following
circuits:

Electric Trailer
Brakes

Blue

Battery Feed

Red/Green or
Red/Blue

Brake Apply
Signal

White/Blue

Ground

Black

Refer to the aftermarket electric
trailer brake controller owner's
manual to determine wire color
coding of the electric trailer brake
controller. The wire colors on the
brake controller may be different
from the vehicle. The electric trailer
brake controller should be installed
by your dealer or a qualified service
center.

If equipped, there are four blunt cut
wires inside the front driver side
instrument panel. It will be
necessary to have a technician
connect the 12-volt power to the
engine compartment fuse block.