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One little trick for tracing parasitic losses it to attach the ammeter to
both sides of a connection BEFORE breaking the connection.
In this way a draw that "switches off" when the connection is broken will
be seen.
This happens with self energizing relays in particular.
Not sure if such a test would help in this instance but may be worth a try.
M
On Fri, Jul 5, 2019, 9:11 PM jim via Healeys, <healeys@autox.team.net>
wrote:
> Maybe a picture will help ...The only path for current to flow is throug=
h
> the 'Rotor' winding via the regulator...
>
> Jim
>
> On Friday, July 5, 2019, 10:04:29 PM UTC, R. Lindsay <050.rpl@gmail.com>
> wrote:
>
>
> I have been trying to find the source of a parasitic draw of power from m=
y
> battery for the past several weeks. FWIW, I have lost 0.75 volts on the
> charge over the last 4 days. This seems like a lot.
>
> When I remove the cable from the negative terminal of the battery (its a
> negative ground car) connect one end of my ammeter onto the negative
> terminal on the battery and the other end to the cable removed from the
> battery, the ammeter (set to read current of less than 10A) does not
> register a draw. However, when I use a 12 volt light and connect it to t=
he
> same points`, the light goes on ever so slightly.
>
> Today I noticed a very faint humming from the alternator and it was a
> little warmer to the touch than the other parts of the engine. When I
> disconnect the alternator from the solenoid, the humming went away and wh=
en
> I tested it with the light the light did not light up - no draw. I can=
=E2=80=99t
> see anywhere else the draw could be coming from. I=E2=80=99ve pulled all=
the fuses
> one by one to see if there is power being drawn from each circuit - with
> the alternator hooked up, there is no draw registered.
>
> This is the second new alternator I=E2=80=99ve had on the car in the last=
60
> days. I had the issue before I exchanged the old alternator and the
> problem continued when I installed it. Could it be another bad
> alternator?? Are alternators exceptionally sensitive or just not made ve=
ry
> well these days?
>
> Thank you for any light that can be shed on this.
>
> Price Lindsay
> 67 BJ8
>
> Sent from my iPad
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<div dir=3D"auto">One little trick for tracing parasitic losses it to attac=
h the ammeter to both sides of a connection BEFORE breaking the connection.=
=C2=A0<div dir=3D"auto">In this way a draw that "switches off" wh=
en the connection is broken will be seen.=C2=A0</div><div dir=3D"auto">This=
happens with self energizing relays in particular.=C2=A0</div><div dir=3D"=
auto">Not sure if such a test would help in this instance but may be worth =
a try.</div><div dir=3D"auto">M</div></div><br><div class=3D"gmail_quote"><=
div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 5, 2019, 9:11 PM jim via H=
ealeys, <<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.ne=
t</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class=3D=
"m_-4888545708156762273ydp43b638afyahoo-style-wrap" style=3D"font-family:He=
lvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div></div><div>May=
be a picture=C2=A0 will help ...The only path for current to flow is throug=
h the 'Rotor' winding via the regulator...</div><div><br></div><div=
dir=3D"ltr">Jim<br></div><div dir=3D"ltr"><br></div>
=20
</div><div id=3D"m_-4888545708156762273ydp5638f5e5yahoo_quoted_3027=
470355" class=3D"m_-4888545708156762273ydp5638f5e5yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue',Helvetica,Ar=
ial,sans-serif;font-size:13px;color:#26282a">
=20
<div>
On Friday, July 5, 2019, 10:04:29 PM UTC, R. Lindsay &l=
t;<a href=3D"mailto:050.rpl@gmail.com"; target=3D"_blank" rel=3D"noreferrer"=
>050.rpl@gmail.com</a>> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div dir=3D"ltr">I have been trying to find the source=
of a parasitic draw of power from my battery for the past several weeks.=
=C2=A0 FWIW, I have lost 0.75 volts on the charge over the last 4 days.=C2=
=A0 This seems like a lot.<br></div><div dir=3D"ltr"><br></div><div dir=3D"=
ltr">When I remove the cable from the negative terminal of the battery (its=
a negative ground car) connect one end of my ammeter onto the negative ter=
minal on the battery and the other end to the cable removed from the batter=
y, the ammeter (set to read current of less than 10A) does not register a d=
raw.=C2=A0 However, when I use a 12 volt light and connect it to the same p=
oints`, the light goes on ever so slightly.=C2=A0 <br></div><div dir=3D"ltr=
"><br></div><div dir=3D"ltr">Today I noticed a very faint humming from the =
alternator and it was a little warmer to the touch than the other parts of =
the engine. When I disconnect the alternator from the solenoid, the humming=
went away and when I tested it with the light the light did not light up -=
no draw.=C2=A0 I can=E2=80=99t see anywhere else the draw could be coming =
from.=C2=A0 I=E2=80=99ve pulled all the fuses one by one to see if there is=
power being drawn from each circuit - with the alternator hooked up, there=
is no draw registered.=C2=A0 <br></div><div dir=3D"ltr"><br></div><div dir=
=3D"ltr">This is the second new alternator I=E2=80=99ve had on the car in t=
he last 60 days.=C2=A0 I had the issue before I exchanged the old alternato=
r and the problem continued when I installed it.=C2=A0 Could it be another =
bad alternator??=C2=A0 Are alternators exceptionally sensitive or just not =
made very well these days?<br></div><div dir=3D"ltr"><br></div><div dir=3D"=
ltr">Thank you for any light that can be shed on this.<br></div><div dir=3D=
"ltr"><br></div><div dir=3D"ltr">Price Lindsay<br></div><div dir=3D"ltr">67=
BJ8<br></div><div dir=3D"ltr"> <br></div><div dir=3D"ltr">Sent from my iPa=
d<br></div><div dir=3D"ltr">_______________________________________________=
<br></div><div dir=3D"ltr">Support Team.Net <a href=3D"http://www.team.net/=
donate.html" rel=3D"nofollow noreferrer" target=3D"_blank">http://www.team.=
net/donate.html</a><br></div><div dir=3D"ltr">Suggested annual donation=C2=
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</blockquote></div>
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