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What is the correct sequence for connecting car battery cables?

1 Answers

CameronAnn

07/29/25 10:59pm

Car battery jump-start sequence: 1. Connect one red clamp (+) of the jumper cables to the positive terminal of the dead battery. 2. Connect the other red clamp (+) to the positive terminal of the booster car's battery. 3. Connect one black clamp (-) to the negative terminal of the booster car's battery. 4. Connect the remaining black clamp (-) to an unpainted metal surface on the engine block. Car battery disconnection sequence: 1. After successfully starting the disabled vehicle, first disconnect the negative cable from it. 2. Disconnect the negative cable from the booster vehicle. 3. Disconnect the positive cable from the booster vehicle. 4. Finally disconnect the positive cable from the previously disabled vehicle. 5. Turn off all electrical accessories if possible and let the rescued vehicle run for about 20 minutes. This allows the charging system to recharge the battery.

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