changing amp reading to volts? - Team Camaro Tech
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post #1 of 19 (permalink) Old Mar 30th, 15, 05:13 AM Thread Starter
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kelly
 
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changing amp reading to volts?

is there a way to make the amperage in the console gauge pod of 67 camaro read volts?

i have read to ground one of the wires on amperage guage and others say DONT do it.

long story short is there a way to have repop guages for 67 read volts not amps and look factory.

i have seen they make an adaptor for 68/69 but not 67.

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post #2 of 19 (permalink) Old Mar 30th, 15, 06:42 AM
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Re: changing amp reading to volts?

I do not know of anyone reproducing a 67 style Ammeter as Volts, while American AutoWire makes a 68/69 style Voltmeter.

Since 67's gauges looked like aftermarket of the period back then, I'm sure someone must make a retro style Voltmeter gauge but you might want to replace all the gauges with the series so they look uniform.

Several speedometer repair shops such as Redline Gauge in California can rebuild any set to do whatever you want it to if you want to remain factory looking. Consult your local shop and see what they would charge.


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post #3 of 19 (permalink) Old Mar 30th, 15, 06:02 PM
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Re: changing amp reading to volts?

Amperage and voltage gauges are wired differently.
Voltage will have a positive and negative wire to it,Wired in parallel
Amp gauge will have one of the wires going to a post, through the gauge, and to the last post.Wired in series.
Why not just put a volt gauge in place of the amp gauge?
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post #4 of 19 (permalink) Old Mar 30th, 15, 06:26 PM
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Re: changing amp reading to volts?

If you ground one of the wires on the ammeter you'll end up smoking the fusible link at the junction block or horn relay and, if someone replaced the fusible link with same gauge wire as the circuit it will smoke the whole circuit. Be careful.

http://www.americanautowire.com/PDFL...20IN%206.0.pdf
see if they will sell just the volt meter.

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post #5 of 19 (permalink) Old Mar 31st, 15, 05:31 AM
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Re: changing amp reading to volts?

Well nice to see AAW has retrofitted gauge sets for you 67 owners too.


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post #6 of 19 (permalink) Old Mar 31st, 15, 05:38 AM
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Re: changing amp reading to volts?

Would be nice if they also offered an electric oil pressure gauge to match the original console sets.


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post #7 of 19 (permalink) Old Mar 31st, 15, 05:40 AM
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Re: changing amp reading to volts?

Redline Gauge can convert 68/69's to electronic so I assume they can do 67's as well.


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post #8 of 19 (permalink) Old Mar 31st, 15, 06:24 AM Thread Starter
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Re: changing amp reading to volts?

redline want 249.00 to convert the amp to volt. to rich for me

aaw last i checked only did the conversion for 68/69 not 67.

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post #9 of 19 (permalink) Old Mar 31st, 15, 07:15 AM
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Re: changing amp reading to volts?

The ammeter is a zero center meter, so it requires some manipulation to position the needle to the left zero position. The wiring is pretty easy, just ground the negative side, install a 18K resistor in series with the positive lead, and the meter should read about 18v full scale. If you are really concerned with accuracy you could put a 10K series resistor with a 15K trim pot to dial it in with. You could leave the amps scale and make 12v the midpoint so that it looks like an ammeter.

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post #10 of 19 (permalink) Old Mar 31st, 15, 10:17 AM
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Re: changing amp reading to volts?

Thank you, Nova.

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post #11 of 19 (permalink) Old Mar 31st, 15, 08:23 PM
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Re: changing amp reading to volts?

Be careful fooling with a stock ammeter, its a center 0 milivolt meter and has a full range of 1 Volt from the furthest left pin to furthest right pin. They are real easy to burn up by running to much current thru them.

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post #12 of 19 (permalink) Old Mar 31st, 15, 10:18 PM
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Re: changing amp reading to volts?

Quote:
Originally Posted by Mark C View Post
Be careful fooling with a stock ammeter, its a center 0 milivolt meter and has a full range of 1 Volt from the furthest left pin to furthest right pin. They are real easy to burn up by running to much current thru them.
That would be the purpose of the series resistor - to limit the current.

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post #13 of 19 (permalink) Old Mar 31st, 15, 10:36 PM Thread Starter
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Re: changing amp reading to volts?

Any pics of this ever being done on a 67 Camaro gauge set?
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post #14 of 19 (permalink) Old Apr 1st, 15, 05:23 AM
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Re: changing amp reading to volts?

Quote:
Originally Posted by onovakind67 View Post
That would be the purpose of the series resistor - to limit the current.
The only problem with that is you have to have 0 Volts across the gauge terminals to get the meter to read straight up and down, and .5V at whatever your full scale is going to be, and negative voltage to get it to read below anything below half scale. Pretty tough to do that. Be easier to just replace the mechanism of the gauge and use the face of the stock gauge, than to fool around with resistors.

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post #15 of 19 (permalink) Old Apr 1st, 15, 06:13 AM
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Re: changing amp reading to volts?

Quote:
Originally Posted by Mark C View Post
The only problem with that is you have to have 0 Volts across the gauge terminals to get the meter to read straight up and down, and .5V at whatever your full scale is going to be, and negative voltage to get it to read below anything below half scale. Pretty tough to do that. Be easier to just replace the mechanism of the gauge and use the face of the stock gauge, than to fool around with resistors.
Mark, I think you missed this part of what he wrote.

Quote:
Originally Posted by onovakind67 View Post
The ammeter is a zero center meter, so it requires some manipulation to position the needle to the left zero position..

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