I have to take a few guesses here. If the idiot light is wired one side to ign so its hot when key is on and other side to the alternators little No 1 terminal (works also to supply excitation voltage plus prevent run on like if a diode is used) yes it works and glows as it sees a ground via the alternator when its not running as Jim better explained. As long as the No 2 sense voltage wiring is good and the ground is good, if the light glows dim when running Id suspect an alternator internal problem such as its internal regulator or diodes or slip rings etc but I cant say for sure just what....
John T (NOT an Alternator expert, Im only DC certified lol)
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that�s wha
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