Chevrolet 1998 Express Van Owner's Manual page 207

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