I second Nik's reply. I have had the same situation on mine. It barely goes and
you notice more at night. However, I also have had the light come on bright but
not as bright as when the ignition is turned on and the engine not running. In
this case, One of the leads of the diodes had pulled off. I just soldered it
back on and everything has been running fine since.
Vic Whitmore
76 Spitfire
Thornhill, Ontario
nikolai jaremka wrote:
>
> joe:
> seems to me that every thing is alright with your alternator. i can't
> test mine to be sure, since i'm in the middle of an engine rebuild.
> but, last time i tested my alternator, i belive i got the same results
> for output. as far as the light goes, it really doesn't tell you too
> much. it seems like all it does is tell you when either your battery
> is dead, or the alternator isn't working. i used to worry about mine
> when i noticed the little red glow when i was driving around at night
> (it's alot more noticable in the dark), but i havn't had a problem
> with it yet. (it's been about three years since i did anything with my
> alternator) the only thing i can recomend is buy yourself some cheap
> insurance and invest in some jumper cables for the trunk.
>
> nik jaremka
> '72 spitfire
> east aurora, new york
>
> ---Joe Whalley <jw@mail09.mitre.org> wrote:
> >
> > The light glows brightly when I turn the ignition on, then dims, but
> does not
> > go out when the engine starts. The voltage on the battery with
> engine off is
> > 12.5, goes up to 13.6 at 3000 RPM. It seems the alternator is
> charging. Maybe
> > the indicating circuit is faulty? Where is the voltage regulator on
> a 72 Mk4?
> > Could it need a little adjustment to get the charging voltage up
> around 14?
> >
> > Joe
> >
> >
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