Trailer Brakes; Trailer Wiring; Driving and Operating- Page 264

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

12146155) - 2019 - crc - 9/10/18

Driving and Operating

263

Trailer Brakes

Loaded trailers over 450 kg
(1,000 lb) must be equipped with
brake systems and with brakes for
each axle. Trailer braking equipment
conforming to Canadian Standards
Association (CSA) requirement
CAN3-D313, or its equivalent, is
recommended.

State or local regulations may
require trailers to have their own
braking system if the loaded weight
of the trailer exceeds certain
requirements that can vary from
state to state.

Read and follow the instructions for
the trailer brakes so they are
installed, adjusted, and maintained
properly.

Never attempt to tap into your
vehicle's hydraulic brake system.
If you do, both the vehicle anti-lock
brakes and the trailer brakes may
not function and could result in a
crash.

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:

Stop/Turn
Signal Left

Yellow/Blue

Stop/Turn
Signal Right

Green/Brown

Tail/Parking
Lamps

Gray/Brown

Reverse Lamps

White/Green

Battery Feed

Red/Green

Ground

Black

Electric Trailer
Brake*

Blue

* Circuit powered by electric trailer
brake control wiring provisions.