If your wiring is good you may have an alternator that is not working properly or a bad relay in the regulator. If the alternator is working properly you should have over 6 volts on the R terminal at the alternator. That voltage from the alternator closes the relay in the regulator and turns off the indicator light. When the relay closes it also provides battery voltage to the field windings in the alternator.
If the relay does not work the power to the alternator field coils is provided through the indicator lamp and the resistor at the regulator. Since that circuit provides less than battery voltage it can keep the alternator from reaching its full output.
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Today's Featured Article - The Engine Rebuild Kit - by Curtis Von Fange. I always liked engine rebuild kits. They have all the replacement parts for overhauling an engine without going to the store to get gaskets, special measuring tools, or miscellaneous parts. They come neatly packaged, clean and tidy. But it's important not to let that packaging lull you into a false sense of security. The appearance of matching sleeves, pistons, rings, and bearings can cause frustration and agony if not properly measured and installed in a workshop environment. Following c
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