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Ammeter to voltmeter
#2638974
03/30/19 08:55 PM
03/30/19 08:55 PM
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Joined: Sep 2011
Posts: 1,487 STL
cdstl
OP
pro stock
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OP
pro stock
Joined: Sep 2011
Posts: 1,487
STL
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I just got my Cuda's standard dash back from Instrument Specialties. Looks good. I had them convert the ammeter to a voltmeter.
So, now how do I hook it up?
Thanks
1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500
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Re: Ammeter to voltmeter
[Re: cdstl]
#2638997
03/30/19 10:06 PM
03/30/19 10:06 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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neg to ground. positive to switched 12V, not sure where the best pickup point would be, maybe a switched circuit in the fuse box. EDIT or maybe the blue wire ign1 circuit as that is what the "system" is seeing at any point in time.
Last edited by RapidRobert; 03/30/19 10:14 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Ammeter to voltmeter
[Re: PhillyRag]
#2639053
03/31/19 02:57 AM
03/31/19 02:57 AM
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Joined: Jan 2007
Posts: 7,664 IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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Now you have a Voltmeter: Great for monitoring Alt./V-reg operation. But Now how do you monitor battery state while operating car: Charged-Charging-DisCharging? If the voltmeter is up it is charging. 13.5-14.5 volts is good or you can tell visually with some experience if no numbers (like mine). If voltage is down it is not. I spotted a failing alternator - no charge - by occasional unusual fluctuations in the voltage. I hooked mine to the 12 volt feed used to power the instrument panel... it is switched and works fine.
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Re: Ammeter to voltmeter
[Re: PhillyRag]
#2639077
03/31/19 08:21 AM
03/31/19 08:21 AM
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Joined: Sep 2011
Posts: 1,487 STL
cdstl
OP
pro stock
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OP
pro stock
Joined: Sep 2011
Posts: 1,487
STL
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Now you have a Voltmeter: Great for monitoring Alt./V-reg operation. But Now how do you monitor battery state while operating car: Charged-Charging-DisCharging? I also eliminated a fire hazard. Gonna post a picture soon. I was gonna give IS a call, but it's the weekend. Probably won't be able to get to it until next weekend anyway. Thanks
1972 Cuda 340 4 speed, 2001 Ram CTD 4x4 6 speed, 1970 Duster 408 4 speed, 1996 Ram 5.9 2x4 auto, 1965 Coronet 500
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Re: Ammeter to voltmeter
[Re: ahy]
#2639466
04/01/19 02:14 AM
04/01/19 02:14 AM
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Joined: May 2006
Posts: 1,757 Phila
PhillyRag
top fuel
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top fuel
Joined: May 2006
Posts: 1,757
Phila
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Now you have a Voltmeter: Great for monitoring Alt./V-reg operation. But Now how do you monitor battery state while operating car: Charged-Charging-DisCharging? If the voltmeter is up it is charging. 13.5-14.5 volts is good or you can tell visually with some experience if no numbers (like mine). If voltage is down it is not. I spotted a failing alternator - no charge - by occasional unusual fluctuations in the voltage. . While monitoring voltage is helpful; it's still only an Indirect means of monitoring state-of-battery. With a "healthy" battery & an alt. able to handle any system loads; the ammeter typically only sees a moderate amp load for a relatively short period: (minor recharge after a start)..
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