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Old 06-05-2009, 12:20 PM
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Join Date: Sep 2006
Boat: mastercraft, X-30, 2004, MCX.
Location: Lake Travis
Posts: 8,512
Originally Posted by JimN View Post
If the OEM alternator has only one wire and the new one needs an excite lead, which can be verified by looking at the diagram or calling the source, not having the excite lead connected will keep it from charging. This is needed because the old one (one wire) would have a permanent magnetic field and in the new ones, the magnetic field isn't created until the excite lead triggers energizing of the field coil.

Good stuff JimN.
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