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13-5
It may be necessary to remove the disabled vehicle’s
battery cables from the battery terminals and clean both
cables and terminals. Use a stiff wire brush to remove all
corrosion. Reconnect the cables to the battery terminals
and jump the vehicle.
3.
Untangle and unwind your jumper cables. Like your batteries,
your jumper cables will probably have red and black cables and
will have heavy duty clamps to connect to the battery
terminals. You must make sure that the red and black ends of
your jumper cables never touch each other once they are
connected to the batteries; permitting them to do so can
result in serious arcing and/or damage to one or both
vehicles
4.
Connect the jumper cables in the order described below;
•
Connect one red clamp to the positive (+) terminal of the
dead battery/disabled vehicle
•
Connect the other red clamp to the positive (+) terminal of
the good battery
•
Connect one black clamp to the negative (-) terminal of the
good battery
•
Connect the other black clamp to a piece of grounded
metal on the dead vehicle, preferably shiny metal (not
painted or oily) that is attached to the engine. Usually a nut,
bolt or other protruding shiny metal will work. You may see
a small spark when you connect to a good ground. As a last
resort, you may connect to the negative (-) post of the dead
battery, but this risks igniting hydrogen gas coming off the
battery
Booster Car
Dead Car
Postive (Red)
Negative (Black)
W12M04
Make sure none of the cables are dangling into the engine
compartment, where they could be exposed to moving
parts.
5.
Start the working vehicle. Let it idle for a few minutes. Rev the
engine a little above idle for 30 to 60 seconds. You do this to
charge the battery in the dead vehicle. A good clean
connection between the battery cables and the battery
terminals is essential
6.
Try to start the disabled vehicle. If it does not start, shut the
engine off and disconnect the last connection temporarily
while you slightly twist or wiggle each of the four clamps to
EMERGENCIES