GMC 1997 Safari Owner's Manual page 223

5 . Check that the jumper cables don't have loose or
missing insulation. If they do, you could get a shock.
The vehicles could be damaged too.
Before you connect the cables, here are some basic
things you should know. Positive (+) will go to
positive
(+)
and negative
(-)
will
go to negative
(-)
or a metal engine part. Don't connect positive
(+)
to
negative (-) or you'll get a short that would damage
the battery and maybe other parts too.
Fans or other movmg engine parts can injure you
badly. Keep your hands away from moving parts
once the engines are running.
6. Connect the red
positive (+) cable to the
positive
(+)
terminal of
the vehicle with the
dead battery.
7. Don't let the other end
touch metal. Connect it to
the positive
(+)
terminal
of the good battery.