Re: Alternator on a Farmall MD

Posted by John T on October 13, 2005 at 13:50:48 from (66.244.90.98):

In Reply to: Alternator on a Farmall MD posted by Brad in WI on October 13, 2005 at 11:46:02:

Brad, its sure easier to automatically (no toggle switch needed) excite say a GM 10 SI alternator (what you have???) if you had a pure gas engine as Bob n myself n many others have told or drawn how to for a long time, cuz you have that ready made source of 12 volt excitation just sitting there on the Ignition switch when ON already. But you turn off the ignition after she starts on gas grrrrrrrrrr

I have seen guys use GM 10 SI alternators on diesels and they excited them by running a hot wire to some sort of a normally open oil pressure activated switch (think thats what they use) that closes upon oil pressure. They take the switched output from the Normally Open oil pressure switch with a 10 ohm resistor to the lil No. 1 terminal on the side of the alternator to excite it. The lil No 2. terminal, of course, wires direct to the alternator output.

Let us know, good luck n God Bless

John T

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