Compu Doc
Full Access Member
I'm back with another puzzle about this alternator.
What the _____ is going on now? I can't afford to wreck my new CAT batteries or get stranded.
Since the alternator's on-board regulator is activated by the third wire 12 VDC feed, I am at a loss as to why revving the engine causes the alternator to suddenly wake up.
Appreciate suggestions, as always
If the alternator that you put on has a diode trio you do not use the wire activated by the 12VDC wire. My original alternator did not have the diode trio and my replacement alternator did. The first thing I did was call the place I got it at and asked them if the third wire needed to be installed and they said no and not to use it. A simple blip of the throttle started the alternator. In the image the black thing is the diode trio with the wire on it next to the regulator. If yours has that then the alternator probably is not working right because you have the third wire installed. If that is the case you might have fried something. The alternator in the image is what is known as a self excite alternator which means it does not need any current to turn itself on.
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