It needs to be cleaned
Audio battery???? If you mean Auto Battery then Red Positive (+) RED cable goes to Positive (+) post on battery. Black Negative (-) cable goes to Negative (-) post.
Corroded battery post connections, defective battery, or defective starter.Corroded battery post connections, defective battery, or defective starter.
If you mean what battery post the cable hooks up to, it's to the post marked with a negative (-) sign; if you mean where the cable hooks up to from the battery post, it's to the metal frame and usually held in place with a bolt.
Positive (Red) to positive post on battery. Negative (Black) to negative post on battery.
Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.
Negative battery or jump start post.
The one hooked to the negative battery post. The positive post is slightly larger.
There is no standard for locating the positive or negative posts on a battery. You must look fot the " + " symbol on the battery. The positive post is slightly larger than the negative post.
First connect the battery charger positive connection to the Positive post on the battery and the negative connection to any place on the engine away from the battery and not on the negative battery post. Connecting the battery charger any other way is unsafe.
Connect them together in Series. Connect the negative post of one battery to the positive post of the other battery. Then connect the negative charger cable to one negative battery post and the positive to the positive post of the other battery.
First off you must have the same type batteries. Connect the positive post of the first battery to the positive post of the second battery. Then connect the negative post of the first battery to the negative post of the second battery. Now connect the positive post of the first battery to the positive connection on the vehicle. Then connect the negative post of the first battery to the negative cable of the vehicle. Click the link for a diagram.
Change the positive post? You can change the battery with a new one but you cannot just change the post. If you mean reverse the positions of the positive and negative posts then buy a longer battery cable.