Running a wire from #2 terminal to the main alternator output post does not make it a "one wire" alternator. It would be a "two wire" setup that won't work. I'm calling it "two wire" since you've got two wires added.
To convert to a "one wire" you need a $10 self- excite regulator. Once installed - just one wire is hooked to the alternator at the output post.
With a non-self-excite regulator on a Delco 10SI, 12SI or 18SI, you hook #2 to the output post - like you already did. Then hook a third wire to #1 that provides initial "excite" current from a switched power source. If running from an IGN terminal on a key switch - a 5 amp diode should be hooked in series so you can shut the tractor off. If using a ACC terminal -no diode needed.
If it's charging - you read 14 volts or more. Alternator also has a "full charge" regulator bypass in the back. Just stick a small screwdriver or nail in the back to make it get "full field" and charge.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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