How much does a 1994 nissan micra weigh?

How do you replace Nissan Micra 1994 battery without knowing the positive and negatives?

• Answer:

  Answer 1all batteries have a positive and negative labeled on them. One battery cable should be red and one black the red is positive! Answer 2 The rest of the storyAnswer 1 is correct, but IF you had to ask the question, then answer 1 is incomplete. The labeling on the battery to which answer 1 relates does not say "positive and negative." Instead, symbols are used, and they are embossed in raised symbols on the battery case, next to the terminals they identify. Since they are embossed in the battery case, they usually are NOT a different color, but are the same color as material of the battery case, and you have to really look for them. The positive battery terminal will be identified with a plus [+] symbol next to it, and the negative terminal will be identified with a minus [-] symbol next to it. Also, I think, the two terminals are very slightly different in size [diameter]. Genrerally, the positive terminal will be slightly larger than the negative. I think this was done to help prevent people from connecting the cables backward. Although you can put the slightly larger positive cable connector on the negative terminal on the negative terminal, the negative cable connector will not fit over the negative terminal on the battery. However, this does you no good, once you've incorrectly [reversed] touched the cables to a "hot" battery, which probably will instantly "fry" some of the delicate electronics of your vehicle. As mentioned in answer 1, the polarity of most battery cables are generally indicated by the color of the insulation jacket. Normal protocol 12 volt vehicle electrical systems is that a positive cable or wire will have a red color, and the negative will have a black colored insulation jacket. That is of course, unless someone who did not know what they were doing, replaced one or both of the cables with the wrong color! You can determine if the cable colors are correct by visually tracing them from their terminal connectors to where they go in the engine compartment. If correct, the black negative battery cable will go to a ring connector under a bolt head on the metal engine block. If correct, the red positive battery cable will go to either a solenoid relay mounted on [usually] on the inner fender near the battery, the firewall, or on the starter itself. Once you are certain that you know which battery terminal are positive and negative, AND which battery cables are positive and negative, then replacing the battery is simply a matter of loosening the terminal clamp bolts, removing the NEGATIVE clamp/cable from the battery first, then the postivive clamp/cable. Then remove the old battery, clean all accumulation of dust, dirt, from the battery tray and terminals, and install the new battery. Then clean the cable clamp connectors with a "terminal brush," and install the cables. Intall the POSITIVE cable FIRST, and the NEGATIVE cable last. If there is a safety cover on the positive terminal, replace it over the positive cable clamp.