GMC 1997 Safari Owner's Manual page 224

8. Now connect the black
negative
(-)
cable to
the good battery's
negative
(-)
terminal.
Don't let the other end
touch anything until the
next step. The other end
of the negative
(-)
cable
does not go to the dead
battery. It goes to a
heavy unpainted metal
1
part of the vehicle with
the dead battery.
9. Make your last connection away from the battery,
to the engine block, frame or other unpainted metal
parts of your vehicle.
The electrical connection is just as good there, but
the chance of sparks getting back to the battery is
much less.
10. Now start the vehicle with the good battery and run
the engine for a while.
11. Try to start the vehicle with the dead battery. If it
won't start after a few tries, it probably needs
service.
12. Remove the cables in reverse order to prevent
electrical shorting. Take care that they don't touch
each other or any other metal.
i. Heavy Metal Engine Part
B. Good Battery
C . Dead Battery
5-6