An expanded scale will give you more useful information. Using this scale it will be difficlut to tell the difference between 12.2V and 12.6V- a big difference in the state of charge in your battery.Randy
No problem and good advice. The idea of all that hot wiring located inches from a 5" fuel filler scares me too.
Ammeters are easily converted and here is a CAV version which maintains the look of the original amperes unit.
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Google is your friendWho does the conversion? Any good gauge restorer?
Hi BorisHi James,
are you selling any of the steering wheel centers? If so,
I would be interessted.
All the best, Boris
As long as you've gone this far why not convert it to an "expanded scale" voltmeter"? Simply put a 10V Zener diode (or better yet, a 2-terminal voltage reference) in series with a different value of series resistor. You will have a reading of 10v to say, 15V giving you much better scale for reading your battery voltage.Well apparently it was relatively easy to convert a CAV ammeter to a voltmeter.
Last weekend my mate Paul Hendrickx asked me to help him with this idea so I dismantled one converted voltmeter and a second factory made CAV voltmeter. I gave Paul the two resistance values and he had succeeded in getting a reasonable reading from his CAV unit conversion by adding the correct value resistor to the circuit.
Don't ask me for the kOhm values as these two units gave me different resistances using an accurate Fluke multimeter and I think it will depended upon the sweep of the meter used.
Note these were 0 to +ve meters and the CAV discharge / charge meters as in battery condition units might be wired differently.
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wanted to say how much smoke I will produce with my short circuits sometime I use franglais....Google is still your friend when in need....
this explains quite well what needs to be done to change ammeter in to volt meter
while I received only this morning my cav ammeter ,so il will start calculations and see how much fumes I can produce with short circuit....when I test
Paul
What type did you buy? Been looking into the same but alot to choose from.I bought a nice 3D scanner today for accurate pattern making. This thing is accurate to 8 microns.