Re: Charging system issue

Posted by HH56 On 2015/3/25 13:26:10

O_D's test is the best simple way in the car. By grounding the field wire, that bypasses the regulator and makes the generator put out the max voltage. If you don't see a voltage jump at the battery from approx 6.3 to something well over 7 volts as the field wire is shorted you can assume the generator is not functioning. If you do see a voltage jump then that would tend to narrow the issue to the regulator. The next test would be current output. For that you would need some test equipment capable of reading a much higher amperage than the typical homeowner Volt/ohm meter can handle so probably need a shop.