GMC sierra 2002 User Manual

This harness is included with the heavy

-

duty and

camper/fifth

-

wheel trailer wiring packages. The harness

is for an electric trailer brake controller and includes a
trailer battery feed fuse. This harness and fuse should be
installed by your dealer or a qualified service center.

If you need to tow a light

-

duty trailer with a standard

four

-

way round pin connector, an adapter connector is

included with your vehicle.

Connect the adapter with
the tab (arrow) pointing
towards the top. The cap 
on the wiring harness will
lock onto the tab (arrow)
and help hold the adapter 
in place.