Re: Wiring a volt/amp meter
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Posted by Milan H. Dilworth on October 17, 1998 at 22:59:34:
In Reply to: Wiring a volt/amp meter posted by Dave Bascom on October 12, 1998 at 11:22:17:
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: I have a JD 2010 that has been modified to a negative ground system. The generator has been replaced with an alternator. I would like to wire up a volt/amp meter to monitor the charging system. Does anyone know how I might do this? Any other ideas to keep an eye on the charging system? Thnx My vote is also for the voltmeter. Older tractors may have used the ampmeter, but even they did not show the true load on a battery at all times. The draw on the battery was not circuited through the ampmeter too. Therefore the voltmeter gives an equal or often better indication of your batteries and charging system. A fully charged battery will be at 12.7 volts and 12.3 volts when fully discharged, when you first turn the key on. Charging will be between 13.8 to 15 volts. The voltmeter gives the true indication of the battery condition after the first draw is taken on the battery, and the level it puts the voltmeter. The voltmeter also does better than the ampmeter because it gives the true indication of the condition of the starting system along with the charging system. When you use the battery power to crank the engine, the voltmeter indicates normal condition. A load test by putting a high amp draw on a battery shouldn't drop the voltage below 9.6 volts. The starter can be the load test and the voltmeter the indicator.
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