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When connecting your battery, connect the positive (red) first and the negative (black) second. When removing the battery, disconnect the negative (black) first and the positive (red) second. Been doing this for nearly 30 years. ALWAYS connect the positive post first.
Quick Tips: Jumping a Battery. 1  Tip 01 Never connect the black cable to the negative (â) terminal on your dead battery. This is very dangerous, as it could result in an explosion. 2  Tip 02 Make sure you follow the instructions in your ownerâs manual when jump starting your vehicle. Every car is different.