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The red one ( bigger post ) is positive, the other one goes to a grounded point.

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16y ago

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How do you tell the difference in negative and positive cables on a car battery?

If you have a post battery(the cable attaches from the top) the positive post is larger than the negative.


How do you tell which side of the car battery is positive?

It is almost always imprinted on the battery next to the posts. If not the positive + post is slightly larger than the negative - post.


Is there any way to replace a missing car battery post?

No. If the battery post if missing then you will have to buy a new battery. My question to you is how is a battery post missing?


How do you hook back up a car battery?

Connect the Positive + battery cable to the positive + battery post first. Then connect the Negative - cable to the negative - battery post.


Does the ground wire on a car battery go from the battery post to the car frame?

Mostly you will see it bolted to the engine.


Does car battery leak said post is broken?

Answer 1 - Leakage at a Battery Terminal PostNO, a leak at a battery terminal post does not usually indicate a broken post. Car battery terminal posts are very tough, and usually do not break, especially before the plastic battery case breaks. Usually, a leak around a car battery terminal post is caused by a failure of the SEAL of the case plastic cast around the terminal post. This can be caused by a manufacturing or material defect, from abuse, or from vibration.


How do you measure the voltage on a car alternator?

get a multi meter that reads dc voltage & touch the black (negative -) wire to the negative battery post & the red (positive +) wire to the positive battery post with car running. car off is battery voltage, car on is alternator voltage.


What is a Battery post?

On a car battery, the cables attach to two metal posts which stick up on the top of the battery.


Can you start a car if battery cables are on the wrong post?

no- if you connect a battery the wring way round you will short the battery on a modern car you may damage the ECU


Which battery post do you connect first when replacing a car battery?

You connect the positive terminal first.


How do you connect car battery?

Red onto the positive post Black onto the negative post


What is posts and where do you get them?

It depends on what you are referring to. Posts can be comments or additions to Web sites on the computer, a battery has posts that the cables connect to. Fence posts. You can post a letter. Since this is under car parts and repairs, I will assume battery posts. A battery with top posts has them as a part of the battery and they cannot be replaced. A side post battery uses a bolt to connect the battery cable to the battery with a flat connector. You can get adapters that screw into the bolt hole in the battery and let you use a side post battery in a car that uses a top post. You can get them at an auto parts store or any place that sells car batteries.