answersLogoWhite

0

Automotive Battery Terminal Polarity Identification
I'm not familiar with your vehicle, and I've never seen a battery that did not have the terminal polarity marked.

There are 4 ways [to my knowledge] to determine the polarity of an auto battery's terminals:

1. Most batteries will have a plus symbol [+] embossed [molded/raised] on the plastic of the battery case top panel next to the Positive terminal, AND a Negative [minus] symbol [--] embossed next to the Negative terminal.

2. Or there may be the abbreviation for Positive [ POS] embossed next to the Positive Terminal, and the abbreviation for Negative [NEG] next to the Negative Terminal. Some batteries may have both the symbols AND the POS and NEG abbreviations.

3. On all auto batteries I've worked with, the Positive terminal is SLIGHTLY larger in diameter than the Negative terminal. Thus, the Negative [black] cable clamp should only fit easily onto the Negative terminal, and either NOT FIT on the Positive terminal, or be way to tight to install by hand. And, the Positive cable [red] terminal clamp will fit way too loose [sloppy] if installed on the Negative battery terminal. It should fit "just right" on the Positive terminal.

ONLY use this "trial fit" method with ONE CABLE AT A TIMEuntil you are absolutely certain of which cable fits onto which terminal, because IF you touch both cables to the terminals AT THE SAME TIME, and they are reversed, you will get one hell of an arc [sparking] which could cause the battery to explode, and will probably ruin much of the electronics [computers, etc.] in your vehicle.

4. Another method of determining battery terminal polarity is to use a Volt-Ohm Meter [VOM], with the selector switch set to the DC 50 Volt scale. There are two types of meter: An Analog type [has a needle and voltage scales on the face], and there is a Digital type which uses an LED readout display with numerals to indicate readings.

With either meter, touch the red and black test probe tips to the two battery terminals only momentarily while watchingthe needle, or the digital readout.

IF the Analog meter needle moves to the right, and shows about 12 Volts, then the terminal to which the RED test probe is touched IS the Positive terminal. BUT... IF the needle bounces to the left, then the polarity is reversed, and that means that the BLACK test probe is on the Positive terminal, and the red test probe is on the Negative terminal.

With a Digital meter, the polarity is indicated in the display readout as a plus [+] symbol, or a minus symbol [--]. IF the symbol is +, that indicates that the red test probe is on the Positive terminal and the black test probe is on the Negative terminal. This is as it should be.

IF a minus symbol [--] appears next to the voltage indication, then that means the red test probe is on the Negative terminal, and that the black test probe is on the Positive terminal.

It would be an immense help if you could find a friend or neighbor with some knowledge of electrical polarity to help you this time. Once you get the hang of it , this will be an easy determination. Good luck.
User Avatar

Wiki User

15y ago

What else can I help you with?

Related Questions

How do you determine the elevation of unlabled contour lines?

The distance in height between contour lines should be stated in the map's legend. If the contours are stated in the legend as being 50 metres apart, then count the lines upwards from a contour that has a height against it, and multiply by the number of unlabelled lines.


If you are cooking at a friends house and they have an unlabled container of flour how can you tell if it is self rising or all purpose before actually using it to cook?

Put a little of it in a bowl with some warm water and a bit of sugar. Wait. If it bubbles, it's self rising. One also could think of ASKING the friend if it was self-rising or not, but i digress.


How do you turn off the Daytime Running Lights on a 2001 Toyota 4Runner?

On the 2001 4Runner the DRL relay is inside the vehicle, near the driver's right leg, just left of the center console. It is labeled "Running Lights." You can reach it without taking apart the dash at all; just reach behind it and unplug the connector, remove pin 2, tape it securely out of the way, and plug the connector back in. I have a 2000 4Runner which has a grey box that is unlabled. I followed the instructions above and it worked. To assist any who attempt to remove PIN2 please note you will want to find a very small flathead screwdriver. I actually grinded a small screwdriver down very flat so I could push it into the backside of the PIN2 hole which relieved the catch inside the connector. Once I had the small screwdriver inserted into the backside of the PIN2 hole I pushed backwards from the front and PIN2 slipped out. This way if you decide to replace PIN2 all you have to do is snap it back in.


Was Lewis carrol on opium?

He probably did come in contact with opiates, they were used as headache medicine in the Victorian era. But more than likely the few drug references throughout stories like Alice's Adventures in Wonderland were actually making fun of the drugs that were socially acceptable to use in that time. He wrote most of Alice on a boat with the Liddell children so he definitely wasnt on drugs when he wrote it though.Im not sure of my sources but supposedly he hated tobacco, but used belladonna among other herbs for his home remedies for some ailments he suffered from, such as hearing loss.Though, he was diagnosed with epilepsy well after Alice had been published there are about 10 years missing from his journals before it was published that leave us open to the posibility he couldve been epileptic before hand. Supposedly stuttering and hearing loss are some symptoms of it. If he wasnt inspired from his own epilepsy, he might have been from watching a young man he went to school with have a seizure. Supposedly not only did he witness it, but also went to the hospital to talk to him afterwards. But Id check his journals to be sure. If you go through all the stages of a temporal lobe seizure you can almost turn to the next chapter of Alice's Adventures in Wonderland and they match up. Like the first thing you experience are Aura's or simple partial seizures, and it often feels like your stomach is rising, like you do when you fall. Kind of like Alice down the rabbit hole, and so on and so forth.I guess it all depends on what you mean by "take". He definitely took medication, but everyone does. However, please don't be one of those people that are sure he was on drugs and that's how he came up with Alice's stories. It was a mix of his handicaps (his stuttering his name inspired the Dodo bird's character), his friendships (he incorporated the Liddell girls a lot throughout the story, from Alice's birthday to their nicknames), his takes on the world (like how he felt about politics, and children's literature) that he might not have been able to express what with his overbearing father (who was a reverend and I feel made him join the priesthood) and POSSIBLY medications he might have taken.Its a wonderful story to want to delve into, but don't be biased and stay open to interpretation, its what makes his writing so fascinating because of how faceted it is. Everyone can take something different from it.- AliciaWell with the mentioning of him using belladonna, he could have gotten some inspiration from that because they say a person who takes belladonna becomes mad as a hatter.... But then again it could be just a coicidence.. There are also drug references/drug state of minds being referenced in the movie like when Alice is talking to the flowers there are morning glories (LSA) a psychadelic and there are poppy plants in there too... The fact that she is talking to the flowers is like a drug induced state (people conversate with flowers when you are tripping hard). She also eats mushrooms and drinks many body/mind altering substances throughout the movie. She drink bottles of unlabled liquid that make her shrink and these cookie things that make her bigger. It all could be relative to taking drugs but it also could just be random coincidences too bad he's not around today to ask him.....