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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.
9.
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.
Attach the cable at least
1.8
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
10.
11.
much less.
Now start the vehicle with the good battery and run
the engine for a while.
Try to start the vehicle with the dead battery. If it
won’t start after a few tries, it probably needs
service.