Buick 1993 LeSabre Owner's Manual page 204

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 on the engine of the vehicle with the dead
battery.
9.
Attach the cable at least
18
inches
(45
cm) away
from the dead battery, but
not
near engine parts that
move. The electrical connection is just
as
good there,
but the chance of sparks getting back to the battery is
much less.
R
10. Now start the vehicle with the good battery and run
11. Try to start the vehicle with the dead battery.
the engine for a while.
If it won't start after a few tries, it probably needs
service.