How to Connect Jumper Cables for Car Jump Start?

[Richard]

First, connect one end of the red cable to the positive terminal of the donor car and the other end to the positive terminal of the recipient car. Then, connect one end of the black cable to the negative terminal of the donor car and the other end to the negative terminal of the recipient car. After that, start the engine, and the car should be able to start. Precautions for car jump start connections: 1. Always turn off the engine of the donor car before connecting the jumper cables. 2. After connecting the cables to the donor car, ensure that the positive and negative cables do not come into contact with each other, as a short circuit can be very dangerous. 3. When removing the jumper cables, always disconnect the negative cable first, followed by the positive cable.

[Clara]

I remember once helping a friend jump-start a car, and the key was to operate safely. First, turn off the engines of both vehicles. Take out the jumper cables, and attach the red clamp to the positive terminal (usually the red post) of the dead battery first, then to the positive terminal of the donor car's battery. Next, attach the black clamp to the negative terminal of the donor car's battery. The last black clamp should not be attached to the negative terminal of the dead battery but instead to a clean metal surface like an engine bracket or another unpainted metal part. This helps avoid sparks that could ignite battery gases. Then, start the donor car's engine and let it run for about two minutes to charge the battery. After that, try starting the dead car. If it starts, remove the cables in reverse order: first the black clamp from the metal surface of the dead car, then the black clamp from the donor car, and finally the red clamps. Take your time during the process to avoid short circuits, which could damage electronics or cause worse issues. After jump-starting, it's best to check the battery condition soon, as old batteries are prone to problems.