GMC 1995 Safari Owner's Manual page 175

6. Connect the red positive
(+) cable to the positive (+) terminal of the
vehicle with the dead battery. Use a remote positive (+) terminal if the
vehicle has one.
Dead Battery (+)
Good Battery (+)
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. The other end
of the negative cable doesn't go to the dead battery. It goes to a heavy
unpainted metal part of the vehicle with the dead battery.