It will vary from car to car, but the neg is usually black, and has a "-" sign. Normally the positive terminal is larger than the negative terminal.
on the frame or on the side of the engine block
connect negative side first
when you buy your car, the battery's potential energy is high in the negative side and weaker in the positive side. when ever you turn on your car, you are displacing some energy from the negative side to the positive side. as time goes on, your battery's potential energy begins to become balanced. that is how your battery loses its power. hope i was helpful :)
Normally the black battery cable is negative.
The positive side of a car battery is red - look for red plastic cap or the "+" symbol on the plastic next to it. Also the positive post is slightly larger than the negative post.
you put the red jumper on the posotive side and the black one on the negative battery side. Connect positive of one battery to the positive of the other. Then connect the negative of one to the negative of the other. Red to red, black to black.
The plus side of the battery has a NIPPLE on it. The negative side of the battery is flat. Hope this helps
the negative side
It is almost always imprinted on the battery next to the posts. If not the positive + post is slightly larger than the negative - post.
Black
cathode
Negative side