John,
Take it to an alternator rebuild shop.  Every one I've gone to will test it
free.  They will tell you how much current it will produce, check diodes, etc.
They have a book that they can check which lead is "I" and which is "F" for you
and check the "I" lead function.  That's what I did on a couple of alternators I
picked up at wreck yards and didn't know exactly what they came off of.
Worked for me .... Jim S..

John Slade wrote:

> Guys,
> I'm getting really frustrated with my (stock 3rd gen) alternator. I'm seeing
> 13.2v on the buss when the engine is running, but the charge light is still
> on (even with the diode).
>
> Answers to two questions might help me debug it:
>
> 1. What voltage should I see on the buss with the engine running?
>
> 2. The picture on the schematic seems backwards to the actual alternator,
> and there are no markings on the connector. Is there a way to test which
> terminal is the sensor (direct to battery) and which is the idiot light?
>
> Note: The alternator tested fine a few weeks back, but I guess I could have
> fried the internal regulator since.
>
> John Slade (coming down to the wire)
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html

--
Jim Sower ... Destiny's Plaything
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T