ampere guage

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Copper - Posts: 121

Joined: October 27, 2008

Location: Nova Scotia, Canada

Posted: June 12, 2009 at 8:31 PM / IP Logged

Hello to all. I just picked up an ampere guage for my nissan truck. I have a lot of accessories on my truck and I'd like to make sure that my alternator is keeping up with everything ok. I need a bit of direction for this.

Thanks

i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 12, 2009 at 9:38 PM / IP Logged

Did it come with any instructions? How many connections are on the gauge? How many large and how many small?

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Copper - Posts: 121

Joined: October 27, 2008

Location: Nova Scotia, Canada

Posted: June 13, 2009 at 5:31 AM / IP Logged

It has a postive and a negitive on the back side of the guage, and one wire for illumination....the directions that came with it aren't very clear.

i am an idiot

Platinum - Posts: 13,667

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 13, 2009 at 5:14 PM / IP Logged

i am an idiot wrote:

How many large and how many small?

The terminals, how many, and which ones are large, and which ones are smaller in size?

Did it come with a metal bar or metal rod?

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Copper - Posts: 121

Joined: October 27, 2008

Location: Nova Scotia, Canada

Posted: June 17, 2009 at 7:32 AM / IP Logged

there are 2 terminals on the back of the guage. one neg and one pos- both the same length and diameter. it did not come with a metal bar or rod.

thanks.

would i be better off with a volt guage here? I just wanna make sure my alternator is keeping up with my accessoreis at idle.

i am an idiot

Platinum - Posts: 13,667

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 17, 2009 at 3:12 PM / IP Logged

In order for an ammeter to work, there needs to be a shunt. It may be inside the meter movement. Would you consider the terminals large enough to carry 100 amps of current? Is the meter heavy enough for it to have a pretty massive piece of metal inside of it? Using an ohm meter, what is the resistance between the 2 terminals?

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Copper - Posts: 121

Joined: October 27, 2008

Location: Nova Scotia, Canada

Posted: June 17, 2009 at 9:07 PM / IP Logged

i'll try to describe it to you.

both terminals are the same size. if i were to take an educated guess, i'd say that each pole is approx 3/16'' in diameter, and 1-1/2 long. looking at the guage it is 0-60 on either side of the 0. To the left it says discharge, to the right of 0, it's charge. it's your average run of the mill after market guage. I wouldn't think it would handle 100 amps, but I dunno.

i am an idiot

Platinum - Posts: 13,667

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 17, 2009 at 10:01 PM / IP Logged

i am an idiot wrote:

Using an ohm meter, what is the resistance between the 2 terminals?

i am an idiot

Platinum - Posts: 13,667

Joined: September 21, 2006

Location: Louisiana, United States

Posted: June 17, 2009 at 10:04 PM / IP Logged

Where does the needle rest? all the way to the left or in the middle.

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Copper - Posts: 121

Joined: October 27, 2008

Location: Nova Scotia, Canada

Posted: June 17, 2009 at 10:06 PM / IP Logged

the needle rests on 0. I'll check the resistance in the morn.

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