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I have a 1950 MG TD car which I have recently purchased I was getting a negative reading on the ameter in the car I have since replaced the dynameo and regulator twice!! As my problem now is instead of showing a charge of 2-3 amps it is now at half revs 15-20 amps tickover is correct O-1

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What output amps is your dynamo rated at? This will influence the ammeter reading. The regulator should control the voltage and current to the battery and keep it from overcharging. It is not unusual for the ammeter to see up to 30 amps (max).

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Posted on Nov 03, 2008

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