From a hasty re-read of this topic, your next item to check should be the handlebar switch for the indicator inside the l/h switch cluster. Assuming it's the Minda switch for a later 350, I have had wires come adrift inside one of those before. You can dismantle the switch itself to some extent, careful not to lose small screws, etc.
Have you tried running a temporary wire from the flusher unit to the r/h indicators? If they start working, the problem is in the switch area.
I have gone through all the wires and found that the black wire to the connector in the casquette is after all the G/B. So I connected the wires and now the right indicator doesn't short circuit. The ammeter behaves exactly the same as if I left indicate. HOWEVER, the indicators don't come on. The VOM showed no other problems. So, progress but still stumped.