GMC 1998 Savana Van Owner's Manual page 208

6. Connect the red positive
(+)
cable to the positive
(+)
terminal of the vehicle with the dead battery. Or use
a remote positive
(+)
terminal if the vehicle has one.
7. Don't let the other end
touch metal. Connect it
to the positive
(+)
terminal of the good
battery. Use a remote
positive (+) terminal if
the vehicle has one.
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.
5-6