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wiring diagram TO-30 12v w/alternator

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10-15-2011 12:45:42

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51 TO-30

Someone attempted to put an alternator on mine and I can't find a complete wiring diagram for a 12v with alternator. I can find 6 +12v with a generator. I assume there is a difference between the 6 + 12v generator I was always under the impression that 12 volt gave you easier starting and brighter lights, but what is the difference between 12v generator and 12v alternator? I was always under the impression that "converted to 12v" meant with an alternator, would putting a 12v generator on do the same thing? Is one better than the other or is there a preference?

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10-17-2011 10:50:45

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 Re: wiring diagram TO-30 12v w/alternator in reply to Mike Lucas, 10-15-2011 12:45:42 <-those guys can make you a harness. Price seems right to me.. just ordered one for my TO-35 last weekend. For $69 bucks, it's not worth my time.

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John (UK)

10-16-2011 07:10:27

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 Re: wiring diagram TO-30 12v w/alternator in reply to upnorthwi, 10-15-2011 12:45:42  
If you tell me what type of Alternator you have I will send you a wiring diagram. There are two types usually, one has a single wire and the other uses two wires. Most people when they convert to 12 volt use an Alternator which will charge the battery quicker and if the tractor is not used very much this can be an advantage. Some people do convert to a 12v Generator you don't need to re-wire if you do, just change the Regulator and any light bulbs. Alternators can be obtained cheaply and that is why they will use them, but 12v is 12v no matter which way you charge

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10-16-2011 14:22:35

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 Re: wiring diagram TO-30 12v w/alternator in reply to John (UK), 10-16-2011 07:10:27  
Hi John, thanks for the help.

I looked it over today and here is what I found:
51 TO30,ser: 65661, 12V battery, Neg ground,Rayloc starter C4324, coil has Neg lead to Dist, Alt is Delco Remy with a plastic plug and 2 wires on the side and a lug in the back-no numbers I can see, the large starter button is disconnected- has a small solenoid screwed to the top of it with a lead to starter- bat- ign( doesn't work with switch, have to short it), big old key switch with 4 terminals, a seperate broken light switch, both gauges disconnected, resistor not hooked up, no regulator and lots of yellow wire going everywhere with lots of tape.

Sorry for all the extra detail. Know where I can get a reasonable wiring harness?

Thanks for your help,

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John (UK)

10-17-2011 06:44:48

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 Re: wiring diagram TO-30 12v w/alternator in reply to upnorthwi, 10-16-2011 14:22:35  
Hi Tony, It sounds like it is a real mess. You can't buy a harness for a conversion to an alternator, but it is quite easy to make one up from the diagram I can send you. The Coil is wired incorrectly, the feed should go to positive terminal on the Coil if the tractor ground is Negative. Seems like you need a new ignition/lights switch and a Safety Switch on top of the Clutch Housing. It wont need the resistor if the Coil is 12 volts, it will need one though if it is a 6 volt. The separate light switch is not necessary if you get a combined Ignition and lights switch like was fitted originally. There is no need for a Regulator with an Alternator as it is all built-in unless it is a very early type, but from how you describe it, it does not need one. If you email me direct at the address below or the one at the top and send me a copy of this post and tell me what you need and anything else that you want.I will send you the wiring diagram plus some other stuff that you will

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Jim Blair

01-11-2013 16:56:03

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 Re: wiring diagram TO-30 12v w/alternator in reply to John (UK), 10-17-2011 06:44:48  
Hi John. I read your answer to Tony dated 10/17/2011. I have the same problem Tony had, I need a schematic for TO30 alternator conversion. My alternator is 2 wire, but I have a voltmeter instead of ampmeter. alternator checks ok but tractor is apparently wired wrong.Old chevy regulator is in circuit but may not be needed. I would appreciate help you can give me. Thank you Jim

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