If you're running a coil with a ballast resistor between the ignition switch and the coil, the normal running voltage at the coil + terminal will be around 9.5 volts. A bypass wire from the starter solenoid "R" terminal to the downstream side of the resistor or the coil + terminal is a good idea so the coil gets full battery voltage during cranking. That circuit has nothing whatsoever to do with the operation of the alternator, however.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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