> Reply-To: Robert J Donahue/DELCO <RJDONAHU@mail.delcoelect.com>
>
> I believe somebody commented that starters are not polarity
> sensitive. I'm just a novice backyard auto mechanic, but as
> an electrical engineer, I believe all DC motors are polarity
> sensitive.
I believe that the starter uses electromagnets not permanent so when
you reverse the polarity to magnetic field reverses too and the motor
turns the same way with either polarity.
> I had a weird experience
> with a two-cycle Saab 96, where I had the two spark plug
> wires reversed. This reversed the firing order and and the
> engine actually started up backwards! In reverse the car
> went forward and vice versa.
What a wonderful anti theft device.
- -Mark
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