The wiring of a Delco 10SI can be done in several ways depending on what accessories you have or want on your tractor.
Do you have a amp. or volt meter?
Do you have or want a idiot light?
Do you want to spend the extra money to get a self energizing alt so you only need one wire?This is a typical wiring diagram.  Since I do not know what you have or want I wiil just tell you how I wire it and if you need something else you can post back. First you will need a short 16 gauge jumper wire to go from the BAT terminal to the #2 terminal.  Now you will need a 10 gauge wire to go from Bat. terminal to the battery side of the starter solenoid. You can mount a ammeter in this wire but I do not. If you got a low energized Alt. that is it. All of the 10SI Alt. will charge with this set up but if you do not have a low energized Alt. you will have to rev. the motor to get it to start charging. Once it starts it will charge at a idle. I do not like revving a cold motor or spending the extra on a low energized one. If you want to price one click HERE For a regular 10SI you will need to add the field wire. This is a 16 gauge wire that goes from the #1 post to a idiot light and then to the run side of the IGN. switch. If you do not want a idiot light you can use a one amp/50 volt diode. I use the idiot light since I do not have a ammeter.
HOPE THIS HELPS
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