That statement theres voltage (to frame ground I assume) on one side of the "ammeter" but not on the other IS REALLY REALLY GIVING ME HEARTBURN
1) Ifff thats an ammeter (NOT a voltmeter) there should be near equal voltage on BOTH sides with respect to frame ground. An "ideal" ammeter has zero resistance through it while even a real one has extreme lowwwwwww resistance sooooooo the voltage on BOTH sides hould be hot and about the Same to frame ground. Sure it NOT a voltmeter as an ideal one of those has infinite resistance??? Whats it face say and what are the numbers/values????????/
2) Ifffffff theres no voltage on that side of ammeter the switch CAN NOT EXCITE THE ALTERNATOR MAKING HER CHARGE !!!!!!!!!!!!!!
3) Ifffff that switch is ONLY to excite the alternator and does NOT serve any ignition switch for a coil ignition (you state its a magneto distributor which isnt kosher, which is it, mag or batetry powered coil ignitiion???) theres no need for any diode in that line buttttt Id still install a safety 10 ohm current limiting resistor in series to the alternators excitation circuit.
4) Ifffffff youre really getting an 11 amp discharge when that switch is pulled there may be bad alternator diodes. Most alternators use Neg ground so I hope you hooked your tractor battery up that way??????? Butttttt if theres no voltag eon that ammeetr terminal Im unsure how youre getting such a discharge???????
This is hard to do over the net since we arent there with our eyeballs and a meter ya know but we try our best. So far things just arent adding up from what you say ???????
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