The SAAM (or SAM) was replaced (see this thread for the note about why:
replacing my SAAM (or SAM)), but some of the problems persisted. Apparently the SAM was causing the brights to flicker -- they don't anymore -- but now it turns out that the alternator is prolly the root cause of the other two electrical problems. I have to get it replaced on Monday. Unforch, this means driving 200 miles with a wonky alternator. Since I've already driven 20000 miles with it, I'm hoping it can last one more round-trip from NYC to NP.
The smart center folks told me that this was the first they'd heard of such a problem. It's always nice to be first in something, I guess.