which is the jumper cable positive
Connect one end of the red (positive) jumper cable to the positive terminal on the stalled battery. 3. Connect the other red (positive) cable to the positive terminal of the good battery. 4. Connect one end of the black (negative) jumper cable to the negative terminal of the good battery. 5. Connect the other black (negative) cable to a clean, unpainted metal surface under the disabled carâs hood. Somewhere on the engine block is a good place.