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12 Volt GM 10SI Alternator...330U

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Tweeter

02-10-2006 09:58:20

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I have my 10si alternator on the tractor and I would like to know where the wire that I put a 1.6ohm resistor for "exciting it" starts and ends. Im pretty sure it comes off the number 1 post. Where does it go?

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jossette

02-10-2006 17:16:12

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Re: 12 Volt GM 10SI Alternator...330U in reply to Tweeter, 02-10-2006 09:58:20

try this

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Bus Driver

02-10-2006 10:35:29

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Re: 12 Volt GM 10SI Alternator...330U in reply to Tweeter, 02-10-2006 09:58:20

Where did the value of 1.6 ohms originate? When IH began to use the Delco alternators on tractors in the mid 1970's, they used a 25 ohm wirewound resistor for the exciter circuit. Lots of people love the bulb to prevent feedback to the ignition, but it is the least durable method. I think the resistor is the best, diode is next and bulb last. Resistors up to 50 ohms work fine- I have verified by trying them. I would not use less than 25 ohms. Use at least a 5 watt resistor.

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Tweeter

02-10-2006 12:46:08

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Re: 12 Volt GM 10SI Alternator...330U in reply to Bus Driver, 02-10-2006 10:35:29

Sorry, I meant 1.6 diode.

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old

02-10-2006 14:15:19

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Re: 12 Volt GM 10SI Alternator...330U in reply to Tweeter, 02-10-2006 12:46:08

Ok that makes more since. It goes in the wire from the #1 terminal to the switch. The line on the diode goes towards the alternator.

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Tweeter

02-10-2006 16:40:59

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Re: 12 Volt GM 10SI Alternator...330U in reply to old, 02-10-2006 14:15:19

Thanks

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Brownie 45

02-10-2006 10:35:12

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Re: 12 Volt GM 10SI Alternator...330U in reply to Tweeter, 02-10-2006 09:58:20

The resistor should be 11 ohms. The nearest standard value is 10 ohms. Should be 25 watts.

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old

02-10-2006 10:10:18

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Re: 12 Volt GM 10SI Alternator...330U in reply to Tweeter, 02-10-2006 09:58:20

That would go in place of the light or diode from what I understand, have one set up that way my self. So you go from #1 terminal then the resister and that then goes to the switch. The side of the switch that is hot when the switch is turned on/ or run position which ever you want to call it.

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