> > Measure the current.  It will flow one way as an indicator of engine
> > start-up, and the other way until the battery is re-charged from the
> > effort...
>
>         Hmm, now that's a good idea, only problem I can see if you'd have
to build
> your shunt such that it could pass the hundred or more amps needed during
> starting, without suffering a large drop. TTYL

Just tap an opamp/comparator across a small portion of the battery
conductor. Design so that the differential signal will be enough to
consistently switch the comparator one way or t'other.


        RM

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