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Old 07-07-2010, 12:01 PM   #15
britman
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Join Date: May 2010
Location: south cent Ky
Posts: 70
Default Re: Ammeter vs Voltmeter

I had a similar problem in putting a high output alternator on my XK150 Jag coupe to maintain original appearance. I used a "shunt" to continue to use the original ampmeter. I am not a electrical engineer but you can go online for "rules"/equations to calculate the correct size "shunt wire" (essentially a jumper wire of correct gauge that transfers current around the terminals of the instrument). I have not had problems with my set up but the shunt I installed was a little too large of gauge so the ameter does not give accurate readings. My 39 deluxe has a voltmeter (which has been trouble)--I wish it was an ammeter (which was standard equipment on 39 standard fords).
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