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Bob M

12v conversion question

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boog

03-16-2002 23:05:48

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I have a SMTA that I purchased last summer. Someone had put in a 12v battery but left 6v generator and coil.

I printed off your wiring diagram for Farmall H/M. I figured that SMTA would basically be the same. Went to to town today and got an alternator, ballast resistor, and 12v coil.

My question concerns the voltage regulator. Looking at your diagram I do not see one. Is that because the Deco 10-SI alternator has one built in? If not do I need to replace the one already on the tractor and if so, what do I need and how is it wired in?

thanks boog

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Bob M

03-17-2002 07:43:52

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Re: Bob M - 12v conversion question in reply to boog, 03-16-2002 23:05:48

Hey Boog - You say you purchased both a ballast resistor AND a new 12 volt coil. If you re-use the existing (6 volt) ignition coil, install the ballast resistor per the diagram. But if you elect to install the 12 volt coil leave the ballast resistor out - it's not required. ...Bob M

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boog - stay with?

03-17-2002 22:27:26

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Re: Re: Bob M - 12v conversion question in reply to Bob M, 03-17-2002 07:43:52

Bob M.,

Since I have not yet installed the 12v coil would you recomend using it or staying with the 6v? As far as I know there is nothing wrong with the 6v other than age.

Also, thanks for making wiring diagram available. I had been wanting to do this for a while but wasn't sure how to go about it.

boog

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Bob M

03-18-2002 05:56:42

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Re: Re: Re: Bob M - 12v conversion question in reply to boog - stay with?, 03-17-2002 22:27:26

Boog - If it were me I'd be inclined to stick with the existing 6 volt coil, simply because a 12 volt (or a modern 6 volt...) coil just doesn't "look" right on a Farmall. On the other hand, if you don't want the trouble of mounting/wiring the ballast resistor the 12 volt coil is the way to go. ...Bob M

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The Red

03-17-2002 05:20:01

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Re: Bob M - 12v conversion question in reply to boog, 03-16-2002 23:05:48

Boog the Delco alternator has a built in regulator.

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boog

03-17-2002 06:41:45

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Re: Re: Bob M - 12v conversion question in reply to The Red, 03-17-2002 05:20:01

Thanks for the info. I assumed that it did but want to to be sure, you know what they say about assume.

Headed out to the shop to get started on it.

thanks again
boog

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