so the volt gauge in my model a has been acting funny the last week or so, jumping around alot between 14-16 volts.... ok no problem ill just rebulid the alternator... fast foward to today. I take apart the alternator (stock chrome GM style internal reg.) to find the diode trio is burned up, Great! i install the new voltage regulator, diode trio, brushes, ohm the stator, clean up the commutator where the brushes ride, new bearings etc.... put her all together, runs good charging just over 14. Cool! go to shut it off..... still runs... ? i know about putting a diode in with the exciter wire to keep from feed back to the ign switch. ( had to do this on my OT Nova) my question is why now? i put this car together 6 years ago and never had this problem before? why with a rebulit alternator does this problem start? or could it be in the ing switch and it just shit today? what do you guys think?