--===============7587251079257039104==
boundary=Apple-Mail-0EEBBBEA-52EA-4CC4-87C5-82EDDD18CCE6
Content-Transfer-Encoding: 7bit
--Apple-Mail-0EEBBBEA-52EA-4CC4-87C5-82EDDD18CCE6
charset=utf-8
Content-Transfer-Encoding: quoted-printable
It was sent to USA with two horns. Home market might have had only one. P=
aul will know.
The most frequent cause of horn weakness is defective grounding, followed=
by poor connections in power supply. =20
Chase and check all the wires and connections. Horns draw a fierce cur=
rent, so good connections are important.=20
Bob
> On Aug 10, 2021, at 1:01 PM, Michael MacLean <springer.mike51@gmail.com> w=
rote:
>=20
> Speaking of horns, my 1969 MGB GT has only one horn. Is that original? I=
t has two wires going to it. It works OK, but it just sounds weak. What is=
a good alternative? Can I wire two horns here?
> Mike MacLean
>=20
>> On Tue, Aug 10, 2021 at 2:49 AM PaulHunt73 <paulhunt73@virginmedia.com> w=
rote:
>> The horn wiring changed on late model cars so that the stalk button puts o=
ut 12v to the horns, and the horns only have one wire each as they pick up a=
n earth from their mountings.
>> =20
>> As such the horn push should have purple (12v, fused always live) and pur=
ple/black (to the horn) wires. First thing to check is, does the interior l=
ight work? If not maybe the purple supply from the fusebox has failed, botto=
m fuse.
>> =20
>> If so, with it lit press the horn button. Does it go out? If so then th=
ere is a bad connection back through the fusebox.
>> =20
>> Next it depends on whether it is easier for you to check the wiring at th=
e multi-plug by the column, or at the horns. In the former case look for th=
e purple and purple black wires and check them (connector still plugged toge=
ther) for 12v on the purple all the time, and on the purple/black when the b=
utton is pushed. If on the purple but not the purple/black the switch or wi=
ring in the stalk is faulty. Sometimes the wires are moulded into the conne=
ctor blocks so you can only test by parting the connectors just enough to e=
xpose the pins, but they are still making contact.
>> =20
>> At the horns with the button pressed you should have 12v on the purple/bl=
ack spades on the horns (wiring connected). If not and the test at the colu=
mn multi-plug was good then the circuit back to there is faulty, most likely=
is a bad connection between the wiring connector and horn spade.
>> =20
>> If you see 12v on the horn spade check a clean part of the horn body for 1=
2v as well. If you see that then the horn earthing is bad. If you saw 12v o=
n the purple/black spade but not on the body then the horn is bad internally=
.
>> =20
>> It might seem unlikely that the fault is at the horns in both cases, but a=
nything is possible.
>> =20
>> BTW stuff the trumpets with rags to avoid getting a loud blast if you dis=
turb the fault and one or other should suddenly start working :o)
>> =20
>> PaulH
>> ----- Original Message -----
>>=20
>> We=E2=80=99re working on a 1980 B with a maddening assortment of electric=
al problems. Right now we=E2=80=99re trying to figure out why the horn push=
won=E2=80=99t work=E2=80=94and all the wiring diagrams (Bentley & Advance A=
utowire)=E2=80=94show the horn as having purple wiring=E2=80=94apparently me=
ant for the horn push in the steering wheel button, not the push-in-the-wip=
er-stalk of this car. Any advice from the List?
>>=20
>> _______________________________________________
>>=20
>> Mgs@autox.team.net
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>=20
>> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>>=20
>> Unsubscribe: http://autox.team.net/mailman/options/mgs/springer.mike51@gm=
ail.com
> <MG Horn1.jpg>
> <MGB GT Waxed.jpg>
> _______________________________________________
>=20
> Mgs@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>=20
> Unsubscribe: http://autox.team.net/mailman/options/mgs/mgbobh@gmail.com
--Apple-Mail-0EEBBBEA-52EA-4CC4-87C5-82EDDD18CCE6
charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">&nb=
sp; It was sent to USA with two horns. Home market might have had only=
one. Paul will know.</div><div dir=3D"ltr"> The most frequent c=
ause of horn weakness is defective grounding, followed by poor connections i=
n power supply. </div><div dir=3D"ltr"> Chase=
and check all the wires and connections. Horns draw a fierce c=
urrent, so good connections are important. </div><div dir=3D"ltr">Bob</=
div><div dir=3D"ltr"><br></div><div dir=3D"ltr"><br>On Aug 10, 2021, at 1:01=
PM, Michael MacLean <<a href=3D"mailto:springer.mike51@gmail.com";>spring=
er.mike51@gmail.com</a>> wrote:<br><br></div><blockquote type=3D"cite"><d=
iv dir=3D"ltr"><div dir=3D"ltr"><div>Speaking of horns, my 1969 MGB GT has o=
nly one horn. Is that original? It has two wires going to it.&nb=
sp; It works OK, but it just sounds weak. What is a good alternative?&=
nbsp; Can I wire two horns here?</div><div>Mike MacLean<br></div></div><br><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Aug 1=
0, 2021 at 2:49 AM PaulHunt73 <<a href=3D"mailto:paulhunt73@virginmedia.c=
om">paulhunt73@virginmedia.com</a>> wrote:<br></div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex"><u></u>
<div style=3D"overflow-wrap: break-word;" bgcolor=3D"#ffffff" lang=3D"EN-US"=
>
<div>The horn wiring changed on late model cars so that the stalk button put=
s=20
out 12v to the horns, and the horns only have one wire each as they pick up a=
n=20
earth from their mountings.</div>
<div> </div>
<div>As such the horn push should have purple (12v, fused always live) and=20=
purple/black (to the horn) wires. First thing to check is, does the=20=
interior light work? If not maybe the purple supply from the fusebox has fai=
led,=20
bottom fuse.</div>
<div> </div>
<div>If so, with it lit press the horn button. Does it go out? I=
f so=20
then there is a bad connection back through the fusebox.</div>
<div> </div>
<div>Next it depends on whether it is easier for you to check the wiring at t=
he=20
multi-plug by the column, or at the horns. In the former case look for=
the=20
purple and purple black wires and check them (connector still plugged togeth=
er)=20
for 12v on the purple all the time, and on the purple/black when the button i=
s=20
pushed. If on the purple but not the purple/black the switch or wiring=
in=20
the stalk is faulty. Sometimes the wires are moulded into the connecto=
r=20
blocks so you can only test by parting the connectors just enough to expose t=
he=20
pins, but they are still making contact.</div>
<div> </div>
<div>At the horns with the button pressed you should have 12v on the=20
purple/black spades on the horns (wiring connected). If not and t=
he=20
test at the column multi-plug was good then the circuit back to there is fau=
lty,=20
most likely is a bad connection between the wiring connector and horn=20
spade.</div>
<div> </div>
<div>If you see 12v on the horn spade check a clean part of the horn bo=
dy=20
for 12v as well. If you see that then the horn earthing is bad. If you=
saw=20
12v on the purple/black spade but not on the body then the horn is bad=20
internally.</div>
<div> </div>
<div>It might seem unlikely that the fault is at the horns in both cases, bu=
t=20
anything is possible.</div>
<div> </div>
<div>BTW stuff the trumpets with rags to avoid getting a loud blast if y=
ou=20
disturb the fault and one or other should suddenly start working :o)</div>
<div> </div>
<div>PaulH</div>
<blockquote style=3D"border-left:2px solid rgb(0,0,0);padding-left:5px;paddi=
ng-right:0px;margin-left:5px;margin-right:0px">
<div style=3D"font:10pt arial">----- Original Message ----- </div>
<div><br></div>
<div class=3D"gmail-m_-4576391806103799009WordSection1">
<p class=3D"MsoNormal">We=E2=80=99re working on a 1980 B with a maddening a=
ssortment of=20
electrical problems. Right now we=E2=80=99re trying to figure out wh=
y the horn=20
push won=E2=80=99t work=E2=80=94and all the wiring diagrams (Bentley &=
Advance=20
Autowire)=E2=80=94show the horn as having purple wiring=E2=80=94apparently=
meant for the =20
horn push in the steering wheel button, not the push-in-the-wiper-stalk of=
=20
this car. Any advice from the List?</p></div></blockquote></div>
_______________________________________________<br>
<br>
<a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox.team.net</=
a><br>
t=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"noreferrer" ta=
rget=3D"_blank">http://www.team.net/pipermail/mgs</a> <a href=3D"http://auto=
x.team.net/archive" rel=3D"noreferrer" target=3D"_blank">http://autox.team.n=
et/archive</a><br>
<br>
Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/mgs/springer.m=
ike51@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/=
mailman/options/mgs/springer.mike51@gmail.com</a><br>
</blockquote></div>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><MG Horn1.j=
pg></div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><MGB G=
T Waxed.jpg></div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"=
><span>_______________________________________________</span><br><span></spa=
n><br><span><a href=3D"mailto:Mgs@autox.team.net";>Mgs@autox.team.net</a></sp=
an><br><span>Donate: <a href=3D"http://www.team.net/donate.html";>http://www.=
team.net/donate.html</a></span><br><span>Suggested annual donation $12=
.75</span><br><span></span><br><span>Archive: <a href=3D"http://www.team.net=
/pipermail/mgs">http://www.team.net/pipermail/mgs</a> <a href=3D"http://auto=
x.team.net/archive">http://autox.team.net/archive</a></span><br><span></span=
><br><span>Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/mgs=
/mgbobh@gmail.com">http://autox.team.net/mailman/options/mgs/mgbobh@gmail.co=
m</a></span><br></div></blockquote></body></html>=
--Apple-Mail-0EEBBBEA-52EA-4CC4-87C5-82EDDD18CCE6--
--===============7587251079257039104==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Mgs@autox.team.net
Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/mgs/mharc@autox.team.net
--===============7587251079257039104==--
|