Posted by John B. on November 17, 2013 at 15:39:43 from (50.40.67.67):
In Reply to: Battery or generator? posted by 1010 Blues on November 17, 2013 at 14:19:14:
Ok for starters. Disconnecting the battery when the engine is running is a very bad way to check and see if a generator or alternator is charging. This causes the charging system to build voltage. If anything is turned on it can blow all the lite bulbs or gauges. Easiest way to check a generator is putting out is to take a test light and connect it to the power side of the battery (not ground) and touch the light to the "A" terminal on the generator with it running at 3/4 to full speed. If the light stays off the generator is working. If it lights up the generator is not working. All the ground connections on the generator to mounting bracket, bracket to frame, Voltage regulator to frame all need to be clean with a good connection. Any of these that are not making a good connection will cause it not to charge. You can use the test light in the same manner at the VR "BAT" terminal. These are just some minor tests for beginners but it will isolate your problem. IF you have had both the regulator and generator checked out and tested good proceed up to your amp meter for good connections until it connects to the battery cable.
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