Re: Warning Diode for 12v conversion

Posted by John T on July 17, 2007 at 06:42:02 from (66.244.83.147):

In Reply to: Warning Diode for 12v conversion posted by Wisconsin_Joe on July 16, 2007 at 21:43:41:

Joe, The purpose of that "diode" is to prevent the alternator from backfeeding voltage to the coil allowing the tractor to still run even though you turn the ignition OFF. NOTE I recommend a 10 ohm minimum current limiting safety resistor (instead of the diode) where the didoe may not??? even be required but can still easily be added if she wants to run when the ignition is switched OFF. YES its very polarity sensitive cuz it acts sort of an electrical current flow check valve allowing current to flow through it in one direction BUT NOT in reverse. For Neg ground its banded cathode end is towards the alternator.

NOTE Ive seen em work fine with ONLY the diode orrrrrrrr with a current limiting safety resistor (like my 10 ohm) or even an idiot light which may be way more then the minumim 10 ohms I recommend. Your tractor your call...........

John T

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