Why is it forbidden to connect the "negative" terminal to the "negative"

Jump-starting a car      battery is a temporary solution when the battery is dead or too low to start the engine. However, there are still many car users who still misunderstand the correct and safe way to jump-start a car battery. Sanook Auto would like to recommend the correct steps for connecting a battery. Remember them and use them right away. Preparing before connecting a battery Park the car with good battery close to the car with dead battery without any parts of the cars touching each other. Usually, the cars will be parked facing each other for convenience. Then turn off the engine and turn off unnecessary electrical systems of both cars, such as lights (except emergency lights if necessary), audio systems, air conditioning systems, etc., to reduce the load on the engines as much as possible. สล็อต