Posted by John T on October 31, 2007 at 21:12:49 from (66.244.83.147):
In Reply to: diode question posted by keith smith on October 31, 2007 at 19:07:36:
Keith, Instead of a diode I use a 10 ohm current limiting protection resistor in that excitation circuit and when guys use idiot lights in the same location they are even more resistance then that. The resistor alone should prevent run on from alternator feed back but if not, only then would I add a diode. If the ignition is off there shouldnt be any voltage source getting to that diode if your excitation circuit is wired corectly and when on there will only be current flow until such time the alternator is self exciting so it shouldnt get hot IF THE ALTERNATOR IS OKAY AND SHES WIRED CORRECT UNLESS YOU LEAVE THE IGNITION ON????
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