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Most all aftermarket horns have only one terminal or have 2 terminals that =
are both 12V.
There was only one brand that Paul Reisentz found to use.. I wish I could r=
emember.
I think it was SPAL (the fan guys) but googling I can't find them.
=20
I remember because I dissected a defective original horn for him. Unlike T=
heo, I couldn't
see any way to fix that one.
=20
Bob, you will probably need to look for some original horns (that still wor=
k) or add a relay for the
fans you already have.
Gary W.
=20
=20
> On 09/24/2023 8:08 PM PDT Bob Wanty <bobwanty@gmail.com> wrote:
> =20
> =20
> =20
> My horns have a single terminal so I will get two terminal horns. The rel=
ay idea sounds good.
> Thanks for the help.
> Bob
>=20
>=20
> > On Sep 24, 2023, at 9:45 PM, Theo Smit <tsmit@shaw.ca> wrote:
> >=20
> >=20
>=20
> > Hi Bob,
> > =20
> > The wiring diagram here: http://tigersunited.com/resources/wsm/tt-image=
s/MKIABIGwiring.jpg shows two solid purple wires to the horns feeding 12 vo=
lts, and two purple with black stripe wires that are the horn ring connecti=
ons. There is no separate jumper wire from one horn to the other; if your c=
ar has that then it was added by a previous owner.
> > <Screenshot 2023-09-24 at 7.34.26 PM.png>
> > =20
> > But, if the horns already start to sound when you connect just the hot =
side, then there is an internal short in at least one horn, which is not ho=
w it's intended to be. if you have an ohm-meter that can measure very low r=
esistances then you can take measurements across the two horn terminals and=
from each terminal to the horn body (or the frame mount). That would help =
you isolate where the wiring problem is.
> > <Screenshot 2023-09-24 at 7.38.18 PM.png>
> > This is a sketch of the high-tone horn. The low-tone horn has an L cast=
into the bell. The two terminals connect (through the wire coil and the po=
ints) to each other, but there should be no connection to the horn body its=
elf. The way you're describing the operation of your horns, connecting one =
of the terminals to hot causes the horn to go, even if the other wire is no=
t connected (or, without pushing the horn ring on the steering wheel).=20
> > =20
> > Do both horns work the same way (i.e. they go off when only the hot is =
connected) or does only one horn do that? If one horn works properly (conne=
ct the purple wire to one terminal, connect the purple-with-black-stripe wi=
re to the other) then that horn is fine and it's the other one that has an =
internal short. It can probably be fixed by opening the horn up and figurin=
g out where the short is.
> > =20
> > Theo
> > =20
> >=20
> > ---------------------------------------------
> > From: "Bob Wanty" <bobwanty@gmail.com>
> > To: "Theo Smit" <tsmit@shaw.ca>
> > Cc: "Tom Witt" <atwittsend@verizon.net>, "tigers" <tigers@autox.team.ne=
t>
> > Sent: Sunday, September 24, 2023 6:41:37 PM
> > Subject: Re: [Tigers] Horn Wiring
> > =20
> > Thanks for the responses.
> > Everything is wired to the horns, they look original. There are 2 purpl=
e wires to each horn, one is hot from the fuse box the other wire goes to g=
round when the horn ring is pressed. When I plug the hot wire to the horn =
it works fine, even honks. So the horns must not be original since they are=
grounded to the frame. I still have 4 purple wires when I only have conne=
ctions for two and the wiring diagram only shows two wires, one to each hor=
n.
> > So should I isolate the horn frame ground, plug the hot wire to the hor=
n, use the existing jumper between the horns and connect the horn ring wire=
to the other horn?
> >=20
> > On Sun, Sep 24, 2023 at 1:50=E2=80=AFPM Theo Smit <tsmit@shaw.ca mailto=
:tsmit@shaw.ca> wrote:
> >=20
> > > =20
> > > Correct except that Rootes (or Lucas) would never use a relay where t=
hey could instead pass all the current through a finicky sliding contact.=
=20
> > > =20
> > > Bob, the horns, when properly adjusted, draw about three amps each. I=
t would be a good idea to wire in a cube type relay so that the ring contac=
t does not have to pass that much current.=20
> > > If you like I can draw up a wiring diagram for that.=20
> > > =20
> > > Theo
> > >=20
> > > > On Sep 23, 2023, at 10:52 PM, Tom Witt via Tigers <tigers@autox.tea=
m.net mailto:tigers@autox.team.net> wrote:
> > > >=20
> > > >=20
> > >=20
> > > >=20
> > > > I believe most horns have a relay and the 12v+ is already at said r=
elay. When the horn ring makes contact it GROUNDS the relay (completing the=
circuit) and the relay contact points connect. That passes through the 12V=
+ to the horns. So, typically the horn ring simply grounds the relay to act=
ivate it. Sorry too late for me to check the manual for Tiger specifics but=
MOST cars function that way.
> > > >=20
> > > > Think of yourself standing at a light switch in the house. When so=
meone presses you on the shoulder (connecting to ground) you and the switch=
act like the relay moving the switch to the on position. This then send po=
wer to the light (horn). When the person pressing on your shoulder releases=
you turn the switch off. Hope that helps.
> > > >=20
> > > > =20
> > > > On 9/23/2023 5:59 PM, Robert Wanty wrote:
> > > >=20
> > > > > I am working on wiring the horns for the first time since my 15 y=
ear restore. I am working with the original wiring harness and horns. Start=
ing at the horns there is one on each side with a jumper wire between the =
two horns, there are 2 purple wires leading to each horn, one wire on each =
side is hot and wired to the fuse box the second wire is not hot or ground=
ed. I installed a new horn ring from SS and have one wire from the contact =
on the horn ring and a second wire for the circle contact off the signal sw=
itch, I think the wire for the circle contact should be hot but I don't se=
em to have a connector for it in the harness under the dash and nothing for=
the wire to the horn ring.
> > > > > It would seem to me that I should have a hot wire to the ring con=
tact then a hot to the horns when the horn ring is pressed. but the wiring =
harness does not seem to follow that way of thinking.
> > > > > The wiring diagram is some help but as usual my limited knowledge=
on this will probably start a fire.
> > > > > Any help would be appreciated, I would rather not rewire the circ=
uits so hopefully I can restore the Lucashttp://system.to its original sple=
ndor.
> > > > > =20
> > > > > =20
> > > > > Bob=20
> > > > > =20
> > > > >=20
> > > > > =20
> > > > >=20
> > > > >=20
> > > > > _______________________________________________
> > > > >=20
> > > > > tigers@autox.team.net mailto:tigers@autox.team.net
> > > > >=20
> > > > > Donate: http://www.team.net/donate.html
> > > > > Archive: http://www.team.net/pipermail/tigers http://autox.team.n=
et/archive
> > > > >=20
> > > > > Unsubscribe: http://autox.team.net/mailman/options/tigers/atwitts=
end@verizon.net
> > > > >=20
> > > > >=20
> > > > >=20
> > > >=20
> > > _______________________________________________
> > >=20
> > > tigers@autox.team.net mailto:tigers@autox.team.net
> > >=20
> > > Donate: http://www.team.net/donate.html
> > > Archive: http://www.team.net/pipermail/tigers http://autox.team.net/a=
rchive
> > >=20
> > > Unsubscribe: http://autox.team.net/mailman/options/tigers/bobwanty@gm=
ail.com
> > >=20
> > >=20
> > >=20
> >=20
> _______________________________________________
>=20
> tigers@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archi=
ve
>=20
> Unsubscribe: http://autox.team.net/mailman/options/tigers/garywinblad@com=
cast.net
>=20
>=20
>=20
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<!doctype html>
<html>
<head>=20
<meta charset=3D"UTF-8">=20
</head>
<body>
<div>
Most all aftermarket horns have only one terminal or have 2 terminals th=
at are both 12V.
</div>=20
<div class=3D"default-style">
There was only one brand that Paul Reisentz found to use.. I wish I coul=
d remember.
</div>=20
<div class=3D"default-style">
I think it was SPAL (the fan guys) but googling I can't find them.
</div>=20
<div class=3D"default-style">
</div>=20
<div class=3D"default-style">
I remember because I dissected a defective original horn for him. =
Unlike Theo, I couldn't
</div>=20
<div class=3D"default-style">
see any way to fix that one.
</div>=20
<div class=3D"default-style">
</div>=20
<div class=3D"default-style">
Bob, you will probably need to look for some original horns (that still =
work) or add a relay for the
</div>=20
<div class=3D"default-style">
fans you already have.
</div>=20
<div class=3D"default-style">
Gary W.
</div>=20
<div class=3D"default-style">
</div>=20
<div class=3D"default-style">
</div>=20
<blockquote type=3D"cite">=20
<div>
On 09/24/2023 8:08 PM PDT Bob Wanty <bobwanty@gmail.com> wrote:
</div>=20
<div>
</div>=20
<div>
</div>=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">
My horns have a single terminal so I will get two terminal horns. The r=
elay idea sounds good.
</div>=20
<div dir=3D"ltr">
Thanks for the help.
</div>=20
<div dir=3D"ltr">
Bob
</div>=20
<div dir=3D"ltr">
<br>=20
<blockquote type=3D"cite">
On Sep 24, 2023, at 9:45 PM, Theo Smit <tsmit@shaw.ca> wrote:
<br>
<br>
</blockquote>=20
</div>=20
<blockquote type=3D"cite">=20
<div dir=3D"ltr">=20
<div style=3D"font-family: arial, helvetica, sans-serif; font-size: 10=
pt; color: #000000;">=20
<div>
Hi Bob,
</div>=20
<div>
</div>=20
<div>
The wiring diagram here: <a href=3D"http://tigersunited.com/resource=
s/wsm/tt-images/MKIABIGwiring.jpg">http://tigersunited.com/resources/wsm/tt=
-images/MKIABIGwiring.jpg</a> shows two solid purple wires to the horns fee=
ding 12 volts, and two purple with black stripe wires that are the horn rin=
g connections. There is no separate jumper wire from one horn to the other;=
if your car has that then it was added by a previous owner.
</div>=20
<div>=20
<div>
<Screenshot 2023-09-24 at 7.34.26 PM.png>
</div>=20
</div>=20
<div>
</div>=20
<div>
But, if the horns already start to sound when you connect just the h=
ot side, then there is an internal short in at least one horn, which is not=
how it's intended to be. if you have an ohm-meter that can measure very lo=
w resistances then you can take measurements across the two horn terminals =
and from each terminal to the horn body (or the frame mount). That would he=
lp you isolate where the wiring problem is.
</div>=20
<div>=20
<div>
<Screenshot 2023-09-24 at 7.38.18 PM.png>
</div>=20
</div>=20
<div>
This is a sketch of the high-tone horn. The low-tone horn has an L c=
ast into the bell. The two terminals connect (through the wire coil and the=
points) to each other, but there should be no connection to the horn body =
itself. The way you're describing the operation of your horns, connecting o=
ne of the terminals to hot causes the horn to go, even if the other wire is=
not connected (or, without pushing the horn ring on the steering wheel).&n=
bsp;
</div>=20
<div>
</div>=20
<div>
Do both horns work the same way (i.e. they go off when only the hot =
is connected) or does only one horn do that? If one horn works properly (co=
nnect the purple wire to one terminal, connect the purple-with-black-stripe=
wire to the other) then that horn is fine and it's the other one that has =
an internal short. It can probably be fixed by opening the horn up and figu=
ring out where the short is.
</div>=20
<div>
</div>=20
<div>
Theo
</div>=20
<div>
</div>=20
<hr id=3D"zwchr" data-marker=3D"__DIVIDER__">=20
<div data-marker=3D"__HEADERS__">
<strong>From: </strong>"Bob Wanty" <bobwanty@gmail.com>
<br><strong>To: </strong>"Theo Smit" <tsmit@shaw.ca>
<br><strong>Cc: </strong>"Tom Witt" <atwittsend@verizon.net>, =
"tigers" <tigers@autox.team.net>
<br><strong>Sent: </strong>Sunday, September 24, 2023 6:41:37 PM
<br><strong>Subject: </strong>Re: [Tigers] Horn Wiring
</div>=20
<div>
</div>=20
<div data-marker=3D"__QUOTED_TEXT__">=20
<div dir=3D"ltr">
Thanks for the responses.=20
<div>=20
<div>
Everything is wired to the horns, they look original. There are 2=
purple wires to each horn, one is hot from the fuse box the other wire goe=
s to ground when the horn ring is pressed. When I plug the hot wire to the&=
nbsp; horn it works fine, even honks. So the horns must not be original sin=
ce they are grounded to the frame. I still have 4 purple wires when I=
only have connections for two and the wiring diagram only shows two wires,=
one to each horn.
</div>=20
</div>=20
<div>
So should I isolate the horn frame ground, plug the hot wire to th=
e horn, use the existing jumper between the horns and connect the horn ring=
wire to the other horn?
</div>=20
</div>=20
<br>=20
<div class=3D"gmail_quote">=20
<div class=3D"gmail_attr" dir=3D"ltr">
On Sun, Sep 24, 2023 at 1:50=E2=80=AFPM Theo Smit <<a href=3D"m=
ailto:tsmit@shaw.ca" target=3D"_blank" rel=3D"noopener">tsmit@shaw.ca</a>&g=
t; wrote:
</div>=20
<blockquote>=20
<div dir=3D"auto">=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">
Correct except that Rootes (or Lucas) would never use a relay wh=
ere they could instead pass all the current through a finicky sliding conta=
ct.
</div>=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">
Bob, the horns, when properly adjusted, draw about three amps ea=
ch. It would be a good idea to wire in a cube type relay so that the ring c=
ontact does not have to pass that much current.
</div>=20
<div dir=3D"ltr">
If you like I can draw up a wiring diagram for that.
</div>=20
<div dir=3D"ltr">
</div>=20
<div dir=3D"ltr">
Theo
<br>=20
<blockquote>
On Sep 23, 2023, at 10:52 PM, Tom Witt via Tigers <<a href=
=3D"mailto:tigers@autox.team.net"; target=3D"_blank" rel=3D"noopener">tigers=
@autox.team.net</a>> wrote:
<br>
<br>
</blockquote>=20
</div>=20
<blockquote>=20
<div dir=3D"ltr">=20
<p>I believe most horns have a relay and the 12v+ is already at=
said relay. When the horn ring makes contact it GROUNDS the relay (complet=
ing the circuit) and the relay contact points connect. That passes through =
the 12V+ to the horns. So, typically the horn ring simply grounds the relay=
to activate it. Sorry too late for me to check the manual for Tiger specif=
ics but MOST cars function that way.</p>=20
<p> Think of yourself standing at a light switch in the ho=
use. When someone presses you on the shoulder (connecting to ground) you an=
d the switch act like the relay moving the switch to the on position. This =
then send power to the light (horn). When the person pressing on your shoul=
der releases you turn the switch off. Hope that helps.</p>=20
<div>
</div>=20
<div>
On 9/23/2023 5:59 PM, Robert Wanty wrote:
</div>=20
<blockquote>=20
<div dir=3D"ltr">
I am working on wiring the horns for the first time since my =
15 year restore. I am working with the original wiring harness and horns. S=
tarting at the horns there is one on each side with a jumper wire bet=
ween the two horns, there are 2 purple wires leading to each horn, one wire=
on each side is hot and wired to the fuse box the second wire is not=
hot or grounded. I installed a new horn ring from SS and have one wire fro=
m the contact on the horn ring and a second wire for the circle contact off=
the signal switch, I think the wire for the circle contact should be hot&n=
bsp; but I don't seem to have a connector for it in the harness under the d=
ash and nothing for the wire to the horn ring.=20
<div>
It would seem to me that I should have a hot wire to the rin=
g contact then a hot to the horns when the horn ring is pressed. but the wi=
ring harness does not seem to follow that way of thinking.
<br>=20
<div>
The wiring diagram is some help but as usual my limited kno=
wledge on this will probably start a fire.
</div>=20
<div>
Any help would be appreciated, I would rather not rewi=
re the circuits so hopefully I can restore the Lucas <a href=3D"http://syst=
em.to" target=3D"_blank" rel=3D"noopener">system.to</a> its original splend=
or.
</div>=20
<div>
</div>=20
<div>
</div>=20
<div>
Bob
</div>=20
<div>
</div>=20
<div>
<br>=20
<div>
</div>=20
</div>=20
</div>=20
</div>=20
<br>=20
<pre>_______________________________________________
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</pre>=20
</blockquote>=20
</div>=20
</blockquote>=20
</div> _______________________________________________
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</blockquote>=20
</div>=20
</div>=20
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</div>=20
</blockquote> _______________________________________________
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