In a previous email to the list Ron said that if the relay does fail it is
likely to fail open, keeping the starter battery circuit functional.

This is not my understanding of relay failures - I thought that relays were
more likely to fail closed because the contacts weld together, particularly
if the current rating of the relay is exceeded! Then we're talking flat
starter battery in the morning.

> Well Dang!  Just when I thought I was okay with the relay idea.  Now we're
> back to my original question.  To your corners!  Isolators on the left.
> Relayers on the right.
>