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Kirkham Motorsports

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  #21 (permalink)  
Old 10-03-2022, 08:23 AM
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Dan - If your old Corvette is a C1, then I have nothing to add. If it's a C2, it's BATT gauge carries only a very small current and is not as hazardous as gauges that carry the full output of the battery/alternator.
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  #22 (permalink)  
Old 10-04-2022, 05:55 AM
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It is a battery gage but outside of the Corvette world I wasn’t sure many would understand the term. I wasn’t sure how much juice was sent through it. They have voltmeter conversions for them too, based on the same stories of dangers from the original gage - possibly overblown.
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  #23 (permalink)  
Old 10-04-2022, 06:29 AM
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Quote:
Originally Posted by DanEC View Post
It is a battery gage but outside of the Corvette world I wasn’t sure many would understand the term. I wasn’t sure how much juice was sent through it. They have voltmeter conversions for them too, based on the same stories of dangers from the original gage - possibly overblown.
As I understand it, the C1 amp gauges actually carry a lot of current like the Cobra gauge you've been discussing. The C2 gauge connects to the wire between the alternator and the buss in the engine compartment at two different places. The very small voltage difference between those two points is what it senses and displays. It can be disconnected and everything else continues to work normally. . . My C2 is far from stock and I modified my instrument panel to include a voltmeter rather than the BATT gauge.
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Old 10-05-2022, 06:24 AM
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Patrick,

This one of your better suggestions.

I plan to wire it into 838 as part of the initial build.

John
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Old 10-05-2022, 06:16 PM
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Could anyone possibly make a schematic for this shunt I have an EM so my wiring is different, I already had to replace my amp gauge because it overheated, or should I just convert to volt gauge? I assume any ignition hot wire could be used for the volt gauge? Thanks
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Old 10-05-2022, 07:47 PM
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Take a nice picture, with a reasonably high resolution, of your engine compartment kind of from overhead, and I'll draw you the connections on it. I mostly want to see the alternator, the starter solenoid if you have one (and I mean the little four post FOMOCO solenoid that mounts to the firewall or fenderwell, not the starter motor) and the battery. The easiest, safest, and for surest method is to run a 10 or 12 gauge wire from the alternator to the battery connection at the starter solenoid.
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Old 10-06-2022, 06:42 AM
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Quote:
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Could anyone possibly make a schematic for this shunt I have an EM so my wiring is different, I already had to replace my amp gauge because it overheated, or should I just convert to volt gauge? I assume any ignition hot wire could be used for the volt gauge? Thanks
Your ammeter has two main terminals. Each one has one (or more) heavy wires. All you do is add the shunt wire from one main terminal to the other, leaving all the other wires in place.

If you have male spade terminals on the gauge, each end of the shunt wire must "Y" and have a male and female so that the original connections can be retained.

Last edited by strictlypersonl; 10-06-2022 at 07:15 AM..
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Old 10-06-2022, 08:22 AM
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Quote:
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I assume any ignition hot wire could be used for the volt gauge? Thanks
Correct. A key on 12v wire can be connected to the volt meter, and a good ground.
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