This is a multi-part message in MIME format.
--===============8263342182019519043==
boundary="----=_NextPart_000_009E_01D0D5BC.2F369AA0"
This is a multi-part message in MIME format.
------=_NextPart_000_009E_01D0D5BC.2F369AA0
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Yes, alt is like the first photo, although the cover says 16ACR, but =
same set up otherwise. Ok, I think I got it, the large single B lead =
just needs to connect to other top + terminal then. My clear plug is =
not like your picture=20
Clear plug looks like this...
xxxx xxxx
xxxx
Thanks
Dave
From: PaulHunt73=20
Sent: Thursday, August 13, 2015 10:45 AM
To: dave willner ; mgs@autox.team.net=20
Subject: Re: [Mgs] alternator wiring quick question
Is your alt like this? =
http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/alt16acr.=
jpg
That is the 4 wire system with two plugs. The upper one is pos (thick =
brown) and neg, although there may not be an earth wire on the neg if it =
makes that connection through the mounting ears as on all the other =
types.
In the second plug B+ should have another brown going back to the =
solenoid battery terminal with the brown from the first plug.
A brown/yellow should go to the IND terminal in this second plug, then =
loop back into the harness and out again to a 3rd terminal alongside it =
in the same plug. I think this is to protect the electronics in case =
that plug becomes detached.
Is your clear plug like this? =
http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/altbee3.j=
pg
If so then it sounds like your harness has the plug for the later 2 and =
3 pin alts, but you still have the 2-plug, 4-wire alt.
This shows the three types, how they were wired, and how to convert =
between them =
http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/altconv.j=
pg
If yours aren't like the first two images then without pictures of your =
alt and plugs it's a bit difficult to work out what is what.
Coming on dimly as the revs drop is actually what happens with a dynamo. =
On an alt the light should switch out as the revs go above about =
1000rpm, and switch back on again if they drop below about 600 rpm, with =
little changes in brightness. In practice the idle should never drop =
that low with an alt, as that stops it charging, and one of the benefits =
of the alt is that it should be charging at idle, unlike a dynamo. If =
yours isn't coming on with the ignition but does come on dimly as you =
describe, then it is not wired correctly.
Paul.
----- Original Message -----=20
Thanks Paul. It is a 16ACR, I had it rebuilt about 5 years ago. The =
only connection that fits it is the old clear 3 prong plug with the =
heavy brown lead and 3 brown/yellow leads. The plugs are not like your =
photos though, its 2 side by side and one below on the right side?=20
Also the large brown =E2=80=9Cmystery=E2=80=9D lead on the other 2 =
prong plus is not live, and I=E2=80=99m not sure if it hasn=E2=80=99t =
been hanging off for years or not...Also my red ignition warning light =
doesn=E2=80=99t come on either when the key is turned and I believe it =
never has since I=E2=80=99ve owned the car, I did see it come on dimly =
last night when the revs dropped low, which I know is typical?
------=_NextPart_000_009E_01D0D5BC.2F369AA0
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<HTML><HEAD>
<META content=3D"text/html; charset=3Dutf-8" http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.23588">
<STYLE></STYLE>
</HEAD>
<BODY dir=3Dltr bgColor=3D#ffffff>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Yes, alt is like the first photo, although the cover says 16ACR, =
but same=20
set up otherwise. Ok, I think I got it, the large single B lead just =
needs to=20
connect to other top + terminal then. My clear plug is not like =
your=20
picture </DIV>
<DIV> </DIV>
<DIV>Clear plug looks like this...</DIV>
<DIV> </DIV>
<DIV>xxxx xxxx</DIV>
<DIV>xxxx</DIV>
<DIV> </DIV>
<DIV>Thanks</DIV>
<DIV>Dave</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dpaulhunt73@virginmedia.com=20
href=3D"mailto:paulhunt73@virginmedia.com";>PaulHunt73</A> </DIV>
<DIV><B>Sent:</B> Thursday, August 13, 2015 10:45 AM</DIV>
<DIV><B>To:</B> <A title=3Ddavewillner@pa.net=20
href=3D"mailto:davewillner@pa.net";>dave willner</A> ; <A =
title=3Dmgs@autox.team.net=20
href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.net</A> </DIV>
<DIV><B>Subject:</B> Re: [Mgs] alternator wiring quick=20
question</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV><FONT size=3D2>Is your alt like this? <A=20
href=3D"http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/a=
lt16acr.jpg">http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/ima=
ges/alt16acr.jpg</A></FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>That is the 4 wire system with two plugs. The =
upper one=20
is pos (thick brown) and neg, although there may not be an earth wire on =
the neg=20
if it makes that connection through the mounting ears as on all the =
other=20
types.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>In the second plug B+ should have another brown =
going back to=20
the solenoid battery terminal with the brown from the first =
plug.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>A brown/yellow should go to the IND terminal in this =
second=20
plug, then loop back into the harness and out again to a 3rd terminal =
alongside=20
it in the same plug. I think this is to protect the electronics in =
case=20
that plug becomes detached.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV>
<DIV><FONT size=3D2>Is your clear plug like this? <A=20
href=3D"http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/a=
ltbee3.jpg">http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/imag=
es/altbee3.jpg</A></FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>If so then it sounds like your harness has the plug =
for the=20
later 2 and 3 pin alts, but you still have the 2-plug, 4-wire =
alt.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>This shows the three types, how they were wired, and =
how to=20
convert between them <A=20
href=3D"http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/images/a=
ltconv.jpg">http://www.paulhunt73.webspace.virginmedia.com/mgb-stuff/imag=
es/altconv.jpg</A></FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>If yours aren't like the first two images then =
without=20
pictures of your alt and plugs it's a bit difficult to work out what is=20
what.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Coming on dimly as the revs drop is actually what =
happens with=20
a dynamo. On an alt the light should switch out as the revs go =
above about=20
1000rpm, and switch back on again if they drop below about 600 rpm, with =
little=20
changes in brightness. In practice the idle should never drop that =
low=20
with an alt, as that stops it charging, and one of the benefits of the =
alt is=20
that it should be charging at idle, unlike a dynamo. If yours =
isn't coming=20
on with the ignition but does come on dimly as you describe, then it is =
not=20
wired correctly.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Paul.</FONT></DIV></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px =
solid; PADDING-RIGHT: 0px; MARGIN-RIGHT: 0px"=20
dir=3Dltr>
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">
<DIV>Thanks Paul. It is a 16ACR, I had it rebuilt about 5 years ago. =
The only=20
connection that fits it is the old clear 3 prong plug with the heavy =
brown=20
lead and 3 brown/yellow leads. The plugs are not like your photos =
though, its=20
2 side by side and one below on the right side? </DIV>
<DIV><FONT size=3D2 face=3DArial></FONT> </DIV>
<DIV>Also the large brown =E2=80=9Cmystery=E2=80=9D lead on the other =
2 prong plus is not=20
live, and I=E2=80=99m not sure if it hasn=E2=80=99t been hanging off =
for years or not...Also=20
my red ignition warning light doesn=E2=80=99t come on either when the =
key is turned=20
and I believe it never has since I=E2=80=99ve owned the car, I did see =
it come on=20
dimly last night when the revs dropped low, which I know is =
typical?</DIV>
<DIV>
<DIV=20
style=3D"FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
'Calibri'; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline"><FONT=20
size=3D2=20
face=3DArial></FONT></DIV></DIV></DIV></DIV></BLOCKQUOTE></DIV></DIV></DI=
V></BODY></HTML>
------=_NextPart_000_009E_01D0D5BC.2F369AA0--
--===============8263342182019519043==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Mgs@autox.team.net
Archive: http://www.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/mgs/mharc@autox.team.net
--===============8263342182019519043==--
|