Apparently my "fingers were broken"  (didn't search enough)
When I saw the google image hit I began to wonder but....
Someone kindly forwarded this to me:

http://www.diagnosticnews.com/starter-solenoids-and-continuous-duty-solenoids/

This is for car stereo stuff but

http://www.bcae1.com/battiso.htm

Reading further, it seems that the continuous and intermittent duty
solenoids each have different coil types, thus resistance, due to
the amount of current each is asked to pass.

But don't "quote me on that". lol.

Neil.

On Tue, Oct 20, 2015 at 3:55 PM, Neil N <musomuso@gmail.com> wrote:

> Hi all.
>
> Without taking it apart, how does one visually tell the difference between
> a continuous duty solenoid and an external starter solenoid? Measure Amp
> draw of solenoid itself?
>

--
Neil n

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