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What is the correct method for connecting jumper cables?

4 Answers
IslaDella
07/29/25 11:47pm

Here is the method for connecting jumper cables: 1. First, attach the red clamp of the jumper cable to the red positive terminal of the "dead battery" vehicle. 2. Then, attach the other end of the red cable to the red positive terminal of the "donor" vehicle. 3. Connect the black clamp to the black negative terminal of the "dead battery" vehicle. 4. Next, connect the black cable to the black negative terminal of the "donor" vehicle. 5. Start the engine of the "donor" vehicle first, then start the engine of the "dead battery" vehicle. Additional information: If the "dead battery" vehicle still fails to start, check if there is poor contact at the metal connections. After successfully starting the engine, remember to remove the jumper cables in the correct order to avoid potential short circuits.

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DeJourney
08/16/25 3:09am

I remember once helping a neighbor with a jump start, and it almost sparked everywhere. Luckily, I knew the rules. Prepare two high-quality jumper cables. First, make sure both car hoods are open and the car bodies don’t touch. The red clamp must be securely attached to the positive terminals marked with a plus sign on both batteries—no wobbling. As for the black clamp? Don’t connect it directly to the dead battery’s negative terminal. Instead, attach it to an unpainted metal part of the engine block, like a suspension bolt. Start the rescue car’s engine and let it idle for two to three minutes to charge. Then, try starting the dead car. Once it works, let the previously dead car run for a while to stabilize the voltage. When removing the cables, reverse the order: take off the black clamp first, then the red one, to avoid short-circuiting and sparks. Gloves and safety goggles are a must—this is no joke, or the battery might smoke and cause big trouble. Regular battery maintenance can help avoid needing this trick often.

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DiStephanie
10/19/25 4:08am

As an ordinary car owner, I'm always extra careful when jump-starting, first ensuring the surroundings are safe with no flammable materials. The steps are actually quite simple: the red clamp connects to the positive terminals of both the rescue vehicle and the stalled car's battery—don't mix up the colors. The black clamp attaches to any clean metal part on the stalled car's engine, avoiding direct connection to the battery's negative terminal. Then, start the rescue vehicle's engine and let it run for a minute or two to supply power before attempting to start the stalled car. If successful, don't rush to remove the cables—let the stalled car run for a while first. When disconnecting, remove the black clamp first, then the red one to avoid any sparks. I use thick cables to reduce overheating risks and always check that the clamps aren't rusty before proceeding—safety comes first to prevent damage to electronic devices.

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McElijah
12/02/25 4:44am

I've helped with jump-starting cars on the roadside many times, the key is to follow the correct sequence. The red clamp must be securely attached to the positive terminals of both batteries. Don't attach the black clamp directly to the negative terminal of the dead battery - find an unpainted metal point in the engine bay instead. After starting the donor car, wait until there's sufficient power before attempting to start the dead vehicle. Once it's running properly, remove the black clamp first when disconnecting, then the red one. Always wear gloves and safety glasses, and make sure the cables aren't damaged. It's simple and quick - just stay calm.

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