Okay, I am not as familiar with the Ferguson wiring lay out
as I am with Farmalls but I am sure I can help you out.
First I need info about the alternator one wire or 3
wire? Is it a Delco 10si or other? Did you buy it new if
so where? You wired it per a diagram can you show me
the diagram by a link or photo. If it is a link, if you do
not know how to post a link tell me if post in Modern or
Classic and I will explain how. Tell me if the key switch
is off-on-start or only ignition off-on. Look at the
..generic.. diagram I am attaching. The two
connections off the ammeter shown as heavier lines
should be 10 gauge wires. The one on the left
connection should go to the end of the positive battery
cable opposite end from the battery wherever that
connects. The one on the right should go to the
alternator stud terminal. The battery voltage should be
tested at the battery posts, if I ask what is the voltage
when you do xyz that is what I mean, voltage at the
battery terminals. If I want a voltage check somewhere
else I will instruct you where to test. I assume by volt
meter you are referring to a test meter if you are
adding a volt meter to the tractor let me know about
that.
Edit to add: Where I reference the linked diagram above I am suggesting to compare your wiring to this. I believe diagrams supplied with some one wire alternators do not show connections through the ammeter. In my opinion this setup would require using a volt meter gauge instead of the ammeter. If you are considering this beware a volt meter wires in very different from an ammeter.
Generic 6 to 12 volt conversion diagram adding alt.
This post was edited by used red MN on 11/20/2023 at 06:36 am.