Posted by used red MN on July 30, 2023 at 14:31:39 from (68.46.31.28):
In Reply to: Alternator question posted by rrlund on July 30, 2023 at 14:19:23:
First off yes it should charge only connected with a jumper wire, IF it is a true one wire alternator. However, your statement that the idiot light used to come on and go off after the engine started does not coincide with a one wire alternator. The Delco 10si when converted to a one wire configuration has no means to provide an idiot light. The idiot light is operated by the excite circuit of the voltage regulator on a 3 wire configuration. There is a possibility that the idiot light you thought was for the charging circuit was instead an oil pressure light. WHAT TRACTOR? I would suggest to pull the alternator apart and check for free movement of the brushes and shine up the slip rings.
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