[quote="Indiana Ken"](quoted from post at 10:11:52 01/25/13) Quoting Removed, click Modern View to see
It is basically a solution in search of a problem that you are not likely to ever see. It really only applies if the alternator wire on the #2 terminal is connected remotely such as at the starter solenoid instead of the alternator output terminal. Connected remotely gives better control over the battery voltage than having it connected at the alternator.
Connect them in parallel.
When starting the diode will provide low resistance to energize the alternator. It will also prevent any current from flowing back to the switch which ensures that the switch can control the power to the coil.
The problem with having only a diode in the circuit to energize the alternator is if the wire between the alternator output and the battery should become open all the current would be fed through the #1 terminal back to the switch. With no path back to the sensing wire the alternator voltage will rise until it destroys the alternator. The resistor allows some of the current to flow back through the circuit so the sensing wire can still control the voltage but limit the current to prevent over loading the circuit.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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