9.
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.
10.
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.
11.
Now start the vehicle with the good battery and run
the engine for a while.
12.
Try to start
the
vehicle with the dead battery.
If
it won’t start after a few tries, it probably
needs service.