- #1
lucas_
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When using two cars to jumpstart a dead battery. Why can't you connect the negative jumper cable to the negative terminal of the dead battery (which is what I commonly do) but instead need to connect the negative jumper cable to grounded metal component?https://www.wikihow.com/Charge-a-Dead-Car-Battery
"Connect one end of the negative jumper cable to the negative terminal on the functional, charged battery. In most cases, the negative jumper cable is black.
Attach the other end of the negative jumper cable to a grounded metal component of the car that contains the dead battery. This will ground the car that contains the dead battery upon jump-starting. You can attach the ground cable to the frame, chassis, or another component that is reasonably clean and free of paint or oxidation. "
"Connect one end of the negative jumper cable to the negative terminal on the functional, charged battery. In most cases, the negative jumper cable is black.
Attach the other end of the negative jumper cable to a grounded metal component of the car that contains the dead battery. This will ground the car that contains the dead battery upon jump-starting. You can attach the ground cable to the frame, chassis, or another component that is reasonably clean and free of paint or oxidation. "