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Re: [TR] "More reliable" sidescreen brake pressure switch for DOT5/silic

To: Don Hiscock <don.hiscock@gmail.com>
Subject: Re: [TR] "More reliable" sidescreen brake pressure switch for DOT5/silicone?
From: David Templeton <davidt.triumph@gmail.com>
Date: Mon, 8 Sep 2025 02:34:18 -0400
Cc: Triumphs list <triumphs@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
References: <CAPK7CFCF+3ZhU2Mco1DXtKUyL7NaegTXf5qK9Z2iwiqnT6BTYw@mail.gmail.com>
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Don,

I fabricated a bracket to attach to the brake pedal and install a standard
GM brake switch. The upside is that it allowed the adjustment of the
switch.  Then made a two-wire harness to the original pressure switch and
hooked it in parallel to the original connection.   It can easily be
removed and is well hidden.  I simply touch the brake pedal, and the lights
come on.

David

On Sun, Sep 7, 2025 at 10:29=E2=80=AFPM Don Hiscock <don.hiscock@gmail.com>=
 wrote:

> I converted my TR3B to DOT5 three years ago.  I've been waiting for the
> silicone oil to get into the pressure switch and cause it to quit working=
.
> That time is here.
>
> Yes, I could convert to a TR6 mechanical switch actuated by the brake
> pedal lever.  I may end up there.  But it's fun to keep this car as
> original as I can.  Is any one supplier's or source's brake pressure swit=
ch
> any more reliable than the others around DOT5?
>
> It was a nice day the other day, so the TR3B made the drive to the
> village mailboxes now that I"m living in northern New Mexico.  Forty four
> years last month that I've owned this thing.
>
>
> https://photos.smugmug.com/photos/i-QRBNGvw/0/KvPKhzkvQRPj3kgscg4GSP4mLXM=
MpmfG2cqzZbBW4/X5/i-QRBNGvw-X5.jpg
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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>


--=20
Regards
David Templeton
Ontario, Canada
1959 TR3a TS54226L
1974 Spitsix FM10491L

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:tahoma,s=
ans-serif">Don,=C2=A0</div><div class=3D"gmail_default" style=3D"font-famil=
y:tahoma,sans-serif"><br></div><div class=3D"gmail_default" style=3D"font-f=
amily:tahoma,sans-serif">I fabricated a bracket=C2=A0to attach to the brake=
 pedal and install a standard GM brake switch. The upside=C2=A0is that it a=
llowed the adjustment of the switch.=C2=A0 Then made a two-wire harness=C2=
=A0to the original pressure switch and hooked it in parallel to the origina=
l connection.=C2=A0 =C2=A0It can easily be removed and is well hidden.=C2=
=A0 I simply touch the brake pedal, and the lights come on.=C2=A0 =C2=A0</d=
iv><div class=3D"gmail_default" style=3D"font-family:tahoma,sans-serif"><br=
></div><div class=3D"gmail_default" style=3D"font-family:tahoma,sans-serif"=
>David</div></div><br><div class=3D"gmail_quote gmail_quote_container"><div=
 dir=3D"ltr" class=3D"gmail_attr">On Sun, Sep 7, 2025 at 10:29=E2=80=AFPM D=
on Hiscock &lt;<a href=3D"mailto:don.hiscock@gmail.com";>don.hiscock@gmail.c=
om</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi=
n:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex=
"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">I=
 converted my TR3B to DOT5 three years ago.=C2=A0 I&#39;ve been waiting for=
 the silicone oil to get into the=C2=A0pressure switch and cause it to quit=
 working.=C2=A0 That time is here.</div><div class=3D"gmail_default" style=
=3D"font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-s=
ize:small">Yes, I could convert to a TR6 mechanical switch actuated by the =
brake pedal lever.=C2=A0 I may end up there.=C2=A0 But it&#39;s fun to keep=
 this car as original as I can.=C2=A0 Is any one supplier&#39;s or source&#=
39;s brake pressure switch any more reliable than the others around DOT5?</=
div><div class=3D"gmail_default" style=3D"font-size:small"><br></div><div c=
lass=3D"gmail_default" style=3D"font-size:small">It was a nice day the othe=
r day, so the TR3B made the drive to the village=C2=A0mailboxes now that I&=
quot;m living in northern New Mexico.=C2=A0 Forty four years last month=C2=
=A0that I&#39;ve owned this thing.</div><div class=3D"gmail_default" style=
=3D"font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-s=
ize:small"><a href=3D"https://photos.smugmug.com/photos/i-QRBNGvw/0/KvPKhzk=
vQRPj3kgscg4GSP4mLXMMpmfG2cqzZbBW4/X5/i-QRBNGvw-X5.jpg" target=3D"_blank">h=
ttps://photos.smugmug.com/photos/i-QRBNGvw/0/KvPKhzkvQRPj3kgscg4GSP4mLXMMpm=
fG2cqzZbBW4/X5/i-QRBNGvw-X5.jpg</a></div><div class=3D"gmail_default" style=
=3D"font-size:small"><br></div></div>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@au=
tox.team.net</a> **<br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=C2=A0 <a h=
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hs/davidt.triumph@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://au=
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</blockquote></div><div><br clear=3D"all"></div><div><br></div><span class=
=3D"gmail_signature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_s=
ignature"><div dir=3D"ltr"><div><div dir=3D"ltr"><font face=3D"tahoma, sans=
-serif">Regards</font><div><font face=3D"tahoma, sans-serif">David Templeto=
n</font></div><div><font face=3D"tahoma, sans-serif">Ontario, Canada</font>=
</div><div><font face=3D"tahoma, sans-serif">1959 TR3a=C2=A0TS54226L</font>=
</div><div><font face=3D"tahoma, sans-serif">1974 Spitsix=C2=A0<span style=
=3D"color:rgb(84,84,84)">FM10491L</span></font></div></div></div></div></di=
v>

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