> >
> > Tim - gotcha on the 'dead' battery.  It's actually a
> > missing battery I'm worried about - fairly certain that
> > will be 0v  :-).
> >
> > It sounds like the most difficult thing is going to be
> differentiating
> > between engine on and engine off.

The alternator "no charge" warning lamp signal should be good enough. you'll
need to condition it a bit because it'll be a mucky 12 volts.

Jon

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