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No, there's a separate voltage regulator for the fuel and temp gauges,
located just behind the instruments. It switches the 12V on and off so
that it averages out to be about 10V. This switching is the ticking I
mentioned. Try to read this voltage with an old style analog meter and the
pointer will be jumping around. A digital meter will go nuts. This
assumes, of course, that a previous owner didn't replace the stock panel
voltage regulator with an electronic one.
On Fri, Aug 22, 2025 at 9:26=E2=80=AFPM <gharlowe@comcast.net> wrote:
>
>
> Standard Smiths gauge. However, I=E2=80=99m running GM one-wire alterna=
tor, so
> not using the stock voltage regulator. =E2=80=93 G.
>
>
>
>
>
> *From:* Gary Winblad <winbladgary@gmail.com>
> *Sent:* Friday, August 22, 2025 5:47 PM
> *To:* Donald Antilla <fast427@sbcglobal.net>
> *Cc:* Stu <sabre2tgr@gmail.com>; gharlowe@comcast.net;
> tigers@autox.team.net
> *Subject:* Re: [Tigers] Don's follow up comment Temp Gauge Reading High
>
>
>
> No, the Smiths type does not require the case be grounded... except for
> the night light.
>
>
>
> The two terminals are
>
> 1. about 10V (pulsed, 10V average from the regulator)
>
> 2. to the sensor which completes the circuit by going to ground.
>
> And it doesn't matter which terminal is which.. Inside is a heating wire=
,
> non-polaized.
>
> Gary W.
>
>
>
>
>
> On Fri, Aug 22, 2025 at 2:40=E2=80=AFPM Donald Antilla via Tigers <
> tigers@autox.team.net> wrote:
>
> Graham: Please pardon my ignorance, but will you let me know if you have =
a
> classic Smiths gauge setup, or a Ford type?
>
> My comment prior about grounding the case assumes you have a Smith=E2=80=
=99s type
> system. In that case, you do need to ground your indicator case or- as
> happened to me- you get flakey readings.
>
> Don
>
>
>
> *From: *Tigers <tigers-bounces@autox.team.net> on behalf of Stu <
> sabre2tgr@gmail.com>
> *Date: *Thursday, August 21, 2025 at 7:37=E2=80=AFPM
> *To: *gharlowe@comcast.net <gharlowe@comcast.net>
> *Cc: *tigers@autox.team.net <tigers@autox.team.net>
> *Subject: *Re: [Tigers] Temp Gauge Reading High
>
> A high reading indicates there is a higher current flowing through
> the gauge, so a poor connection is unlikely. Is your tank near empty or
> full? A bad regulator might make less of a difference if the gauge is ne=
ar
> empty.
>
>
>
> The voltage regulator gets its ground through it's mounting screw. It
> would not be a first if there's a bit of corrosion under there. In a qui=
et
> place, turn on the key, don't start it, and you should be able to hear th=
e
> stock voltage regulator ticking away..
>
>
>
> For some more hints, here's a link to my old article on gauge
> troubleshooting.
>
>
>
> TigersUnited.com
> <http://www.tigersunited.com/techtips/BrennanGauge/rt-BrennanGauge1.asp>
>
>
>
> Both gauges have the same innards, so you can swap leads and see what
> happens with the pointer angles.
>
>
>
> Stu
>
>
>
> On Thu, Aug 21, 2025 at 5:57=E2=80=AFPM gharlowe--- via Tigers <
> tigers@autox.team.net> wrote:
>
>
>
> Hey all =E2=80=93
>
>
>
> It=E2=80=99s been quiet here so hoping to T-up an easy discussion.
>
>
>
> My temp gauge is reading about 25 degrees high. I noticed it after a
> shop installed a new clutch, which required the engine to be removed,
> coolant drained, etc., but nothing that should have affected how the gaug=
e
> reads. Running on a cool day, temps were reading around 215-220 degrees.
> To ensure I wasn=E2=80=99t actually in danger of overheating, I checked v=
arious
> water-cooled locations with an infrared thermometer. Highest reading wa=
s
> right at the water neck/thermostat housing (191 deg F). The fuel gauge =
is
> reading accurately. I understand the under-dash instrument stabilizer ca=
n
> affect both instruments, but in this case, only one gauge is off. I plan
> to check the ground to the temp gauge and clean contact points at the
> engine sending unit and at the gauge. Any other suggestions?
>
>
>
> Thanks and I hope all is well out there!
>
>
>
> Graham Harlowe
>
> B382001466
>
> _______________________________________________
>
> tigers@autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers
> http://autox.team.net/archive
>
> Unsubscribe:
> http://autox.team.net/mailman/options/tigers/sabre2tgr@gmail.com
>
> _______________________________________________
>
> tigers@autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers
> http://autox.team.net/archive
>
> Unsubscribe:
> http://autox.team.net/mailman/options/tigers/winbladgary@gmail.com
>
>
--000000000000a679bd063cff729d
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">No,=
there's a separate voltage regulator for the fuel and temp gauges, loc=
ated just behind the instruments.=C2=A0 It switches the 12V on and off so t=
hat it averages out to be about 10V.=C2=A0 This switching is the ticking I =
mentioned.=C2=A0 Try to read this voltage with an old style analog meter an=
d the pointer will be jumping around.=C2=A0 A digital meter will go nuts.=
=C2=A0 This assumes, of course, that a previous owner didn't replace th=
e stock panel voltage regulator=C2=A0with an electronic one.</div></div><br=
><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D=
"gmail_attr">On Fri, Aug 22, 2025 at 9:26=E2=80=AFPM <<a href=3D"mailto:=
gharlowe@comcast.net">gharlowe@comcast.net</a>> wrote:<br></div><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
solid rgb(204,204,204);padding-left:1ex"><div class=3D"msg-121620761821530=
8422"><div lang=3D"EN-US" style=3D"overflow-wrap: break-word;"><div class=
=3D"m_-1216207618215308422WordSection1"><p class=3D"MsoNormal"><span style=
=3D"font-size:11pt;font-family:Calibri,sans-serif"><u></u>=C2=A0<u></u></sp=
an></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Cal=
ibri,sans-serif">Standard Smiths gauge.=C2=A0=C2=A0 However, I=E2=80=99m ru=
nning GM one-wire alternator, so not using the stock voltage regulator.=C2=
=A0=C2=A0 =E2=80=93 G.<u></u><u></u></span></p><p class=3D"MsoNormal"><span=
style=3D"font-size:11pt;font-family:Calibri,sans-serif"><u></u>=C2=A0<u></=
u></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-fami=
ly:Calibri,sans-serif"><u></u>=C2=A0<u></u></span></p><div style=3D"border-=
right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225=
,225,225);padding:3pt 0in 0in"><p class=3D"MsoNormal"><b><span style=3D"fon=
t-size:11pt;font-family:Calibri,sans-serif">From:</span></b><span style=3D"=
font-size:11pt;font-family:Calibri,sans-serif"> Gary Winblad <<a href=3D=
"mailto:winbladgary@gmail.com"; target=3D"_blank">winbladgary@gmail.com</a>&=
gt; <br><b>Sent:</b> Friday, August 22, 2025 5:47 PM<br><b>To:</b> Donald A=
ntilla <<a href=3D"mailto:fast427@sbcglobal.net"; target=3D"_blank">fast4=
27@sbcglobal.net</a>><br><b>Cc:</b> Stu <<a href=3D"mailto:sabre2tgr@=
gmail.com" target=3D"_blank">sabre2tgr@gmail.com</a>>; <a href=3D"mailto=
:gharlowe@comcast.net" target=3D"_blank">gharlowe@comcast.net</a>; <a href=
=3D"mailto:tigers@autox.team.net"; target=3D"_blank">tigers@autox.team.net</=
a><br><b>Subject:</b> Re: [Tigers] Don's follow up comment Temp Gauge R=
eading High<u></u><u></u></span></p></div><p class=3D"MsoNormal"><u></u>=C2=
=A0<u></u></p><div><div><p class=3D"MsoNormal">No, the Smiths type does not=
require the case be grounded... except for the night light.<u></u><u></u><=
/p></div><div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div><div><p =
class=3D"MsoNormal">The two terminals are<u></u><u></u></p></div><div><p cl=
ass=3D"MsoNormal">1.=C2=A0 about 10V (pulsed, 10V average from the regulato=
r)<u></u><u></u></p></div><div><p class=3D"MsoNormal">2. to the sensor whic=
h completes the circuit by going to ground.<u></u><u></u></p></div><div><p =
class=3D"MsoNormal">And it=C2=A0doesn't matter which terminal is which.=
.=C2=A0 Inside is a heating wire, non-polaized.<u></u><u></u></p></div><div=
><p class=3D"MsoNormal">Gary W.<u></u><u></u></p></div><div><p class=3D"Mso=
Normal"><u></u>=C2=A0<u></u></p></div></div><p class=3D"MsoNormal"><u></u>=
=C2=A0<u></u></p><div><div><p class=3D"MsoNormal">On Fri, Aug 22, 2025 at 2=
:40<span style=3D"font-family:Arial,sans-serif">=E2=80=AF</span>PM Donald A=
ntilla via Tigers <<a href=3D"mailto:tigers@autox.team.net"; target=3D"_b=
lank">tigers@autox.team.net</a>> wrote:<u></u><u></u></p></div><blockquo=
te style=3D"border-top:none;border-right:none;border-bottom:none;border-lef=
t:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;marg=
in-right:0in"><div><div><div><p class=3D"MsoNormal"><span style=3D"font-siz=
e:16pt;font-family:Arial,sans-serif">Graham: Please pardon my ignorance, bu=
t will you let me know if you have a classic Smiths gauge setup, or a Ford =
type?</span><u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"font-si=
ze:16pt;font-family:Arial,sans-serif">My comment prior about grounding the =
case assumes you have a Smith=E2=80=99s type system. In that case, you do n=
eed to ground your indicator case or- as happened to me- you get flakey rea=
dings.</span><u></u><u></u></p><p class=3D"MsoNormal"><span style=3D"font-s=
ize:16pt;font-family:Arial,sans-serif">Don </span><u></u><u></u></p><p clas=
s=3D"MsoNormal"><span style=3D"font-size:16pt;font-family:Arial,sans-serif"=
>=C2=A0</span><u></u><u></u></p><div id=3D"m_-1216207618215308422m_40895564=
18688194260mail-editor-reference-message-container"><div><div style=3D"bord=
er-right:none currentcolor;border-bottom:none currentcolor;border-left:none=
currentcolor;border-top:1pt solid currentcolor;padding:3pt 0in 0in"><p cla=
ss=3D"MsoNormal" style=3D"margin-bottom:12pt"><b><span style=3D"color:black=
">From: </span></b><span style=3D"color:black">Tigers <<a href=3D"mailto=
:tigers-bounces@autox.team.net" target=3D"_blank">tigers-bounces@autox.team=
.net</a>> on behalf of Stu <<a href=3D"mailto:sabre2tgr@gmail.com"; ta=
rget=3D"_blank">sabre2tgr@gmail.com</a>><br><b>Date: </b>Thursday, Augus=
t 21, 2025 at 7:37</span><span style=3D"font-family:Arial,sans-serif;color:=
black">=E2=80=AF</span><span style=3D"color:black">PM<br><b>To: </b><a href=
=3D"mailto:gharlowe@comcast.net"; target=3D"_blank">gharlowe@comcast.net</a>=
<<a href=3D"mailto:gharlowe@comcast.net"; target=3D"_blank">gharlowe@com=
cast.net</a>><br><b>Cc: </b><a href=3D"mailto:tigers@autox.team.net"; tar=
get=3D"_blank">tigers@autox.team.net</a> <<a href=3D"mailto:tigers@autox=
.team.net" target=3D"_blank">tigers@autox.team.net</a>><br><b>Subject: <=
/b>Re: [Tigers] Temp Gauge Reading High</span><u></u><u></u></p></div><div>=
<div><div><p class=3D"MsoNormal">A high reading indicates there is a higher=
current flowing through the=C2=A0gauge,=C2=A0 so a poor connection is unli=
kely.=C2=A0 Is your tank near empty or full?=C2=A0 A bad regulator might ma=
ke less of a difference if the gauge is near empty.<u></u><u></u></p></div>=
<div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p></div><div><p class=3D"=
MsoNormal">The voltage regulator gets its ground through it's mounting =
screw.=C2=A0 It would not be a first if there's a bit of corrosion unde=
r there.=C2=A0 In a quiet place, turn on the key, don't start it, and y=
ou should be able to hear the=C2=A0 stock voltage regulator ticking away..<=
u></u><u></u></p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p>=
</div><div><p class=3D"MsoNormal">For some more hints, here's a link to=
my old article on gauge troubleshooting.=C2=A0=C2=A0<u></u><u></u></p></di=
v><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p></div><div><p class=
=3D"MsoNormal"><a href=3D"http://www.tigersunited.com/techtips/BrennanGauge=
/rt-BrennanGauge1.asp" target=3D"_blank">TigersUnited.com</a><u></u><u></u>=
</p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p></div><div><p=
class=3D"MsoNormal">Both gauges have the same innards, so you can swap lea=
ds and see what happens with the pointer angles.=C2=A0 =C2=A0<u></u><u></u>=
</p></div><div><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p></div><div><p=
class=3D"MsoNormal">Stu<u></u><u></u></p></div></div></div><p class=3D"Mso=
Normal">=C2=A0<u></u><u></u></p><div><div><p class=3D"MsoNormal">On Thu, Au=
g 21, 2025 at 5:57<span style=3D"font-family:Arial,sans-serif">=E2=80=AF</s=
pan>PM gharlowe--- via Tigers <<a href=3D"mailto:tigers@autox.team.net"; =
target=3D"_blank">tigers@autox.team.net</a>> wrote:<u></u><u></u></p></d=
iv><blockquote style=3D"border-top:none currentcolor;border-right:none curr=
entcolor;border-bottom:none currentcolor;border-left:1pt solid rgb(204,204,=
204);padding:0in 0in 0in 6pt;margin:5pt 0in 5pt 4.8pt"><div><div><div><p cl=
ass=3D"MsoNormal">=C2=A0<u></u><u></u></p><p class=3D"MsoNormal">Hey all =
=E2=80=93<u></u><u></u></p><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p><=
p class=3D"MsoNormal">It=E2=80=99s been quiet here so hoping to T-up an eas=
y discussion.=C2=A0 <u></u><u></u></p><p class=3D"MsoNormal">=C2=A0<u></u><=
u></u></p><p class=3D"MsoNormal">My temp gauge is reading about 25 degrees =
high.=C2=A0 =C2=A0I noticed it after a shop installed a new clutch, which r=
equired the engine to be removed, coolant drained, etc., but nothing that s=
hould have affected how the gauge reads.=C2=A0 Running on a cool day, temps=
were reading around 215-220 degrees.=C2=A0 To ensure I wasn=E2=80=99t actu=
ally in danger of overheating, I checked various water-cooled locations wit=
h an infrared thermometer.=C2=A0=C2=A0 Highest reading was right at the wat=
er neck/thermostat housing (191 deg F).=C2=A0=C2=A0 The fuel gauge is readi=
ng accurately.=C2=A0 I understand the under-dash instrument stabilizer can =
affect both instruments, but in this case, only one gauge is off.=C2=A0 I p=
lan to check the ground to the temp gauge and clean contact points at the e=
ngine sending unit and at the gauge.=C2=A0=C2=A0 Any other suggestions?=C2=
=A0 <u></u><u></u></p><p class=3D"MsoNormal">=C2=A0<u></u><u></u></p><p cla=
ss=3D"MsoNormal">Thanks and I hope all is well out there!<u></u><u></u></p>=
<p class=3D"MsoNormal">=C2=A0<u></u><u></u></p><p class=3D"MsoNormal">Graha=
m Harlowe<u></u><u></u></p><p class=3D"MsoNormal">B382001466<u></u><u></u><=
/p></div></div><p class=3D"MsoNormal" style=3D"margin-bottom:12pt">________=
_______________________________________<br><br><a href=3D"mailto:tigers@aut=
ox.team.net" target=3D"_blank">tigers@autox.team.net</a><br><br>Donate: <a =
href=3D"http://www.team.net/donate.html"; target=3D"_blank">http://www.team.=
net/donate.html</a><br>Archive: <a href=3D"http://www.team.net/pipermail/ti=
gers" target=3D"_blank">http://www.team.net/pipermail/tigers</a> <a href=3D=
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hive</a><br><br>Unsubscribe: <a href=3D"http://autox.team.net/mailman/optio=
ns/tigers/sabre2tgr@gmail.com" target=3D"_blank">http://autox.team.net/mail=
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ote></div></div></div></div></div><p class=3D"MsoNormal" style=3D"margin-bo=
ttom:12pt">_______________________________________________<br><br><a href=
=3D"mailto:tigers@autox.team.net"; target=3D"_blank">tigers@autox.team.net</=
a><br><br>Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_bl=
ank">http://www.team.net/donate.html</a><br>Archive: <a href=3D"http://www.=
team.net/pipermail/tigers" target=3D"_blank">http://www.team.net/pipermail/=
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://autox.team.net/archive</a><br><br>Unsubscribe: <a href=3D"http://autox.t=
eam.net/mailman/options/tigers/winbladgary@gmail.com" target=3D"_blank">htt=
p://autox.team.net/mailman/options/tigers/winbladgary@gmail.com</a><br><br>=
<u></u><u></u></p></div></blockquote></div></div></div></div></blockquote><=
/div>
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