Battery not charging - tell me what I'm missing

[doodah man]

Ok, I did a little more poking around with the volt meter.

The ground measured as suggested by RichardJ was good at engine block, frame and voltage regulator mount was good.

Measured no impedance from battery + terminal to batt terminal on alternator

With the ignition switch in ON position, I got 12.5 V on the blue wire (field) on the 2-wire plug that goes into to the alternator. Next I followed the test procedure in the service manual for the field circuit.

1. 12.5 V between plug terminal 4 (ignition) to ground.
2. 0 V between F terminal on plug and 4 terminal on plug.
3. 12.5 V between 4 terminal on plug and alternator.

These tests indicate that the problem is the blue wire between the F terminal on the regulator plug to the F terminal on the alternator, but I'm getting 12.5 V at the end of the blue wire. Could it just be the connection?

At the suggestion of a friend, I put a jumper between the battery + to the Field F terminal on the alternator to bypass the regulator and ignition wiring and test the alternator. I still got 12.5 V at the batt terminal on the alternator. This leads me to believe that the alternator is bad again. Is there something else?

Thanks.
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