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You have to disconnect the negative cable from the battery.
Disconnect the negative battery cable.
Disconnect the negative battery cable.
Red, positive + cable to Positive + battery terminal. Black, negative - cable to Negative - battery terminal.
The negative battery lead cable is to be connected to the negative lead terminal on the battery.
Something on the vehicle is on pulling power.
Something is on drawing power from the battery. Always connect the positive cable first and the negative cable last.
My negative battery cable on my 1987 BMW 325is is in the trunk.
The vehicle battery's main purpose is to supply power for the starting system and to power some accessories when the engine is not running. The proper procedure for changing or installing a battery... remove the battery cable first from the negative battery terminal, then from the positive. Install opposite, attach the positive cable lead, then the negative.
Normally the black battery cable is negative.
current flows from the negative to the positive cable and back into the battery cells, recombining with the element depleted of electrons that are flowing out the negative cable. The process is not 100% efficient and the battery will eventually cease producing current.
Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.