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Get a pair of horns from any flaps
=20
From: Mgs <mgs-bounces@autox.team.net> On Behalf Of Michael MacLean
Sent: Tuesday, August 10, 2021 12:01 PM
To: PaulHunt73 <paulhunt73@virginmedia.com>; mgs@autox.team.net
Subject: Re: [Mgs] 1980 MGB wiring question
=20
Speaking of horns, my 1969 MGB GT has only one horn. Is that original? =
It 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 =
The horn wiring changed on late model cars so that the stalk button puts =
out 12v to the horns, and the horns only have one wire each as they pick =
up an earth from their mountings.
=20
As such the horn push should have purple (12v, fused always live) and =
purple/black (to the horn) wires. First thing to check is, does the =
interior light work? If not maybe the purple supply from the fusebox has =
failed, bottom fuse.
=20
If so, with it lit press the horn button. Does it go out? If so then =
there is a bad connection back through the fusebox.
=20
Next it depends on whether it is easier for you to check the wiring at =
the multi-plug by the column, or at the horns. In the former case look =
for the purple and purple black wires and check them (connector still =
plugged together) for 12v on the purple all the time, and on the =
purple/black when the button is pushed. If on the purple but not the =
purple/black the switch or wiring in the stalk is faulty. Sometimes the =
wires are moulded into the connector blocks so you can only test by =
parting the connectors just enough to expose the pins, but they are =
still making contact.
=20
At the horns with the button pressed you should have 12v on the =
purple/black spades on the horns (wiring connected). If not and the =
test at the column 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 =
12v as well. If you see that then the horn earthing is bad. If you saw =
12v on 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 =
anything is possible.
=20
BTW stuff the trumpets with rags to avoid getting a loud blast if you =
disturb the fault and one or other should suddenly start working :o)
=20
PaulH
----- Original Message -----=20
=20
We=E2=80=99re working on a 1980 B with a maddening assortment of =
electrical 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 Autowire)=E2=80=94show the horn as having purple =
wiring=E2=80=94apparently meant for the horn push in the steering wheel =
button, not the push-in-the-wiper-stalk of this car. Any advice from =
the List?
_______________________________________________
Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
Unsubscribe: =
http://autox.team.net/mailman/options/mgs/springer.mike51@gmail.com
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal>Get a pair of horns from any =
flaps<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Mgs =
<mgs-bounces@autox.team.net> <b>On Behalf Of </b>Michael =
MacLean<br><b>Sent:</b> Tuesday, August 10, 2021 12:01 PM<br><b>To:</b> =
PaulHunt73 <paulhunt73@virginmedia.com>; =
mgs@autox.team.net<br><b>Subject:</b> Re: [Mgs] 1980 MGB wiring =
question<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal>Speaking of horns, my 1969 MGB GT has only one =
horn. Is that original? It 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?<o:p></o:p></p></div><div><p class=3DMsoNormal>Mike =
MacLean<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Tue, Aug 10, 2021 at 2:49 AM PaulHunt73 <<a =
href=3D"mailto:paulhunt73@virginmedia.com";>paulhunt73@virginmedia.com</a>=
> wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p =
class=3DMsoNormal>The horn wiring changed on late model cars so that the =
stalk button puts out 12v to the horns, and the horns only have one wire =
each as they pick up an earth from their =
mountings.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>As such the horn push should have purple (12v, fused =
always live) and purple/black (to the horn) wires. First thing to =
check is, does the interior light work? If not maybe the purple supply =
from the fusebox has failed, bottom fuse.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>If so, with it lit press the horn button. Does =
it go out? If so then there is a bad connection back through the =
fusebox.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>Next it depends on whether it is easier for you to =
check the wiring at the multi-plug by the column, or at the horns. =
In the former case look for the purple and purple black wires and check =
them (connector still plugged together) for 12v on the purple all the =
time, and on the purple/black when the button is pushed. If on the =
purple but not the purple/black the switch or wiring in the stalk is =
faulty. Sometimes the wires are moulded into the connector blocks =
so you can only test by parting the connectors just enough to expose the =
pins, but they are still making contact.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>At the horns with the button pressed you should have =
12v on the purple/black spades on the horns (wiring =
connected). If not and the test at the column 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.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>If you see 12v on the horn spade check a clean =
part of the horn body for 12v as well. If you see that then the horn =
earthing is bad. If you saw 12v on the purple/black spade but not =
on the body then the horn is bad internally.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>It might seem unlikely that the fault is at the horns =
in both cases, but anything is possible.<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>BTW stuff the trumpets with rags to avoid getting =
a loud blast if you disturb the fault and one or other should suddenly =
start working :o)<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><div><p =
class=3DMsoNormal>PaulH<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid black 1.5pt;padding:0in 0in 0in =
4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:=
5.0pt'><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial",sans-serif'>----- Original =
Message ----- <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>We=E2=80=99r=
e working on a 1980 B with a maddening assortment of electrical =
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 Autowire)=E2=80=94show the horn as having purple =
wiring=E2=80=94apparently meant for the horn push in the steering =
wheel button, not the push-in-the-wiper-stalk of this car. Any =
advice from the List?<o:p></o:p></p></div></blockquote></div><p =
class=3DMsoNormal>_______________________________________________<br><br>=
<a href=3D"mailto:Mgs@autox.team.net"; =
target=3D"_blank">Mgs@autox.team.net</a><br>Donate: <a =
href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>Suggested =
annual donation $12.75<br><br>Archive: <a =
href=3D"http://www.team.net/pipermail/mgs"; =
target=3D"_blank">http://www.team.net/pipermail/mgs</a> <a =
href=3D"http://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive</a><br><br>Unsubscribe: =
<a =
href=3D"http://autox.team.net/mailman/options/mgs/springer.mike51@gmail.c=
om" =
target=3D"_blank">http://autox.team.net/mailman/options/mgs/springer.mike=
51@gmail.com</a><o:p></o:p></p></blockquote></div></div></body></html>
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