Directions for a Jumper Cable

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Jumper cables connect two batteries for charging.

If you leave a light, or other accessory, on in your vehicle while the ignition is not running, it can drain the battery. When there is not enough power left in the battery, the car won't start. Using another car's battery, you can recharge the dead one enough to start the engine. Jumper cables are used to connect the two batteries. Each end of the jumper cables has a pair of alligator clips. One clip is attached to the positive cable(red) while the other is attached to the negative(black).

Things You'll Need

  • Protective eye wear
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Instructions

    • 1

      Make sure the ignitions on both cars are turned off. Connect the positive red cable to the positive post on the dead battery. The post will be marked with a (+) symbol.

    • 2

      Connect the positive clip on the other end of the cable to the positive post on the live battery.

    • 3

      Connect the negative clip to the negative post marked with a (-) symbol of the live battery.

    • 4

      Connect the negative clip to a nonpainted, metal surface under the car's hood, away from the battery. A shiny metal nut will work best. Be careful not to tough the two ends of the cable together while doing this.

    • 5

      Start the rescue car. Start the car with the dead battery and let it run, charging the dead battery for at least five minutes.

    • 6

      Disconnect the negative clip from the car that was jump started.

    • 7

      Disconnect the negative clip from the car with the live battery.

    • 8

      Disconnect the positive clip from the car with the live battery.

    • 9

      Disconnect the positive clip from the car that was jump started.

    • 10

      Keep the car that was jump started running for 20 minutes before turning it off to allow the battery time to charge.

Tips & Warnings

  • Always attach and disconnect jumper cables in this order to avoid shock or possible explosion.

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References

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  • Photo Credit Jupiterimages/Photos.com/Getty Images

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