Here's Figure 11 from the Repair Manual:

[Linked Image]

Description:
Quote
Dual Circuit Alternator
Dual Circuit alternators use a polarized plug with
two pins. One pin provides DC current for
charging the battery, the second pin is an
independent AC circuit for headlights.
Current for lights is available when the engine is
running. The output varies, so brightness of the
lights changes with engine speed. 12 Volt lights
with a total rating of 60 to 100 watts may be
used. With lights rated at 70 watts, the voltage
rises from 8 Volts @ 2400 RPM to 12 Volts at
3600 RPM. Since the battery is not used for the
lights, the lights are available even if the battery
is disconnected or removed.
Current for the DC side of the alternator is
unregulated and is rated at 3 Amps. The output
rises from 2 Amps @ 2400 RPM to 3 Amps @
3600 RPM.

Looks like a match, except of course for the white/red DC output wire colour. Wouldn't be the first time changes during the production run haven't made it into the service literature!
The tractor-harness side wire is of course whatever colour Greenfield saw fit to use...

Cheers,
Gadge

"ODK Mods can explain it to you, but they can't understand it for you..."

"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."