Bob M said: (quoted from post at 12:58:29 06/17/13) Filo -
You will be better off using a 3-wire Delco (10SI series) alternator. Will cost less, charge better at startup and is less likely to run down the battery if the tractor is not started for long periods. Also will properly operate your idiot light (a 1-wire alternator will not).
Wire up the 10SI as follows:
- Large wire to the alternator BAT (output) post
- Relocate wire from the #4 terminal on the old VR to the #1 aux terminal on the new alternator.
- Connect a jumper from the new alt output post to the #2 aux terminal.
Cutoff/tape all other wiring at the (unused) VR plug.
This is what you currently have for wiring on your tractor.
The only problem you may encounter using Bob's solution is that if your light bulb fails the alternator will not start to charge. A resistor of equal or greater value than the light bulb connected between the #3 and #4 wires at the regulator will overcome this problem.
The #4 wire can be connected to the #1 or F terminal wire at the old regulator and then use that wire to connect to the #1 terminal on the alternator. This post was edited by Owen Aaland at 22:07:59 06/17/13.
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