Ammeter or Voltmeter?
Thread Starter
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Ammeter or Voltmeter?
I am almost done re-wiring my dash in my '69 and have a open spot for a new guage. I currently have Autometric Phantom gauges. I have oil press. water temp. fuel level and vaccum.
I was wondering if given the option between an Ammeter or a Voltmeter, which would you install?
I had a voltmeter in the space and for some reason it now gives me no reading. What would be the proper way to check for a defective voltmeter?
Would the wiring be the same if I went to a ammeter?
Thank you in advance for your help and suggestions and Happy New Year!
I was wondering if given the option between an Ammeter or a Voltmeter, which would you install?
I had a voltmeter in the space and for some reason it now gives me no reading. What would be the proper way to check for a defective voltmeter?
Would the wiring be the same if I went to a ammeter?
Thank you in advance for your help and suggestions and Happy New Year!
Racer
Joined: Nov 2008
Posts: 293
Likes: 1
From: Eaton Ohio
I am almost done re-wiring my dash in my '69 and have a open spot for a new guage. I currently have Autometric Phantom gauges. I have oil press. water temp. fuel level and vaccum.
I was wondering if given the option between an Ammeter or a Voltmeter, which would you install?
I had a voltmeter in the space and for some reason it now gives me no reading. What would be the proper way to check for a defective voltmeter?
Would the wiring be the same if I went to a ammeter?
Thank you in advance for your help and suggestions and Happy New Year!
I was wondering if given the option between an Ammeter or a Voltmeter, which would you install?
I had a voltmeter in the space and for some reason it now gives me no reading. What would be the proper way to check for a defective voltmeter?
Would the wiring be the same if I went to a ammeter?
Thank you in advance for your help and suggestions and Happy New Year!
To test the gauge simply apply a known voltage source to the gauge... a 9V would work well(small and portable) or you would take it out and hook it directly to the car battery..
I wouldn't think you could use the same wiring as is... keep in mind a voltage reading needs to be in parallel where as a current reading needs to be taken in series (inline like christmas lights)
The wires currently ran to that gauge are likely in paralle with the circuit..
Hope I helped... ask any more questions if you have'em.. I'm an electronics technitian by trade and gald to help...
Burning Brakes
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
myself, I have an ammeter.
after reading this though I am thinking about changing:
http://www.egauges.com/ATM_Tips.asp?...terammeter.htm
after reading this though I am thinking about changing:
http://www.egauges.com/ATM_Tips.asp?...terammeter.htm
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
For aftermarket gauges, go with the voltmeter. All the aftermarket ammeter are full flow, they have to be between the alternator and the battery so they need a very large gauge wire. Factory ammeters use a shunt so they only measure part of the flow and are calibrated. Much safer that way.
Thread Starter
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Thanks. I guess I will stick with the voltmeter.
The link given by Dantana leads me to all the info I will need to re-attach all my gauges.
Thanks Again and...
Happy New Year!!!
The link given by Dantana leads me to all the info I will need to re-attach all my gauges.
Thanks Again and...
Happy New Year!!!
