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how to hook up a voltmeter?

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9n8801

12-16-2005 12:12:14




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I want to change my ampmeter and replace it with a volt meter.How do I hook it up. Same as the ampmeter?
Thanks




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souNdguy

12-16-2005 20:49:46




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 Re: how to hook up a voltmeter? in reply to 9n8801, 12-16-2005 12:12:14  
Easy way.... remove ammeter.. hook the 2 wires together. now install volt meter.. run one lead to ground.. and other lead to switched side of key.. when you turn on key.. you have a volt meter reading..

Soundguy



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duey

12-16-2005 16:14:57




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 Re: how to hook up a voltmeter? in reply to 9n8801, 12-16-2005 12:12:14  
Think of it sort of like one who is touching an electric fence... one part of you to the ground and one part of you to touch the wire you're curious about..... . Probably best if you configure to 'read' a wire that is "hot" only with the key switch ON... My feeling is that a volt meter tells a better tale of the HEALTH of an electric system than the old ammeter. duey



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K.LaRue-VA

12-16-2005 12:49:21




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 Re: how to hook up a voltmeter? in reply to 9n8801, 12-16-2005 12:12:14  
No,not the same. Most Ammeters hook up with BIG wires between the battery and generator. All the current to and from the battery goes through the ammeter so it can indicate direction of current flow as well as quantity. These wires and connections carry a lot of current and are often a source of wierd electrical problems.

A voltmeter is much safer and only needs a reference voltage source. The other side of the voltmeter just goes to any good ground.

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9n8801

12-16-2005 13:19:21




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 Re: how to hook up a voltmeter? in reply to K.LaRue-VA, 12-16-2005 12:49:21  
Thanks ,for all the help. You all never fail to come thru for us wanttobes.
Leon in NW Florida



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P J Emerson

12-16-2005 12:45:24




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 Re: how to hook up a voltmeter? in reply to 9n8801, 12-16-2005 12:12:14  
I too took changed to a voltmeter.

Negative off the voltmeter goes to the battery negative.

Positive lead of the voltmeter goes to the lead off of the key that is juiced when the key is on.

Hope this helps.

Cheers



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roger '40 9n

12-16-2005 12:43:01




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 Re: how to hook up a voltmeter? in reply to 9n8801, 12-16-2005 12:12:14  
Nope. Your ammeter measures current flowing through it. A voltmeter measures voltage potential between two points. You want to hook both wires that used to be on your ammeter together and insulated from everything else.
Then run a wire from the switched (ignition) side of your ignition switch to the hot terminal of your voltmeter. Then run a wire from the ground side of your voltmeter to ground. You did not mention iffn you have positive or negative ground. Your ammeter does not care -- it will just read backwards if hooked up backwards. Your voltmeter DOES care about polarity -- so if you have positive ground then the + side of the voltmeter goes to ground -- if you have negative ground then the - side of your voltmeter goes to ground.


Roger in Michigan

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