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Jack,
=20
I had a 55 TR3 with the lights as you described. I put a separate small =
red LED (pretty bright, actually) inside the lens of each of the outer =
fixtures. I got them from a local electronics store. I epoxied it to =
the base and wired it in parallel with the existing center brake light. =
It was pretty easy to do and the result was three brake lights that came =
on at the same time. The regular dual filament bulb still worked as =
normal with the parking light and turn signal.
=20
As a side note, some of the MGA=E2=80=99s (not all of them, but just a =
few years) had a special electrical box of some kind under the bonnet =
that allowed three functions using the two filaments in the rear outer =
lamp assemblies. I first noticed this when I saw an MGA with just the =
outer assembly (no brake light in the center), similar to our =
TR2=E2=80=99s and 3=E2=80=99s, and it had the standard two filament bulb =
on each side. I asked the owner how he got three functions with only =
two filaments and he shrugged his shoulders. He had the wiring diagram =
with him so I looked it over and it=E2=80=99s a solid state (I think) or =
electro-mechanical black box device that allows a dual function for one =
of the filaments. I=E2=80=99m guessing that it was the brakes and turn =
signals on the same filament, but not sure. Still, it was pretty slick. =
I was more curious than anything so I never looked into it further. =
That was a few years ago.
=20
Mike Hado
=20
=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Jack Wheeler =
via Fot
Sent: Tuesday, February 11, 2020 9:03 AM
To: FOT List
Subject: [Fot] Technical Question
=20
Has anyone with a street TR-2 or early TR-3 rewired the brake light so =
the outer lamp fixtures (tail lights) come on when the brake pedal is =
depressed? Originally, these cars were wired so that the brake light =
was in the same fixture as the license plate lamp. Only one lamp - a =
safety issue. I have heard of people re-wiring it so that the outer =
lamps (tail lights) also come on when the brake pedal is depressed (like =
the later TR-3's). Does anyone know how to wire it to make this happen? =
Thanks for your help.
=20
Jack
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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'>Jack,<o:p></o:p></=
span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'>I had a 55 TR3 =
with the lights as you described.=C2=A0 I put a separate small red LED =
(pretty bright, actually) inside the lens of each of the outer =
fixtures.=C2=A0 I got them from a local electronics store.=C2=A0 I =
epoxied it to the base and wired it in parallel with the existing center =
brake light.=C2=A0 It was pretty easy to do and the result was three =
brake lights that came on at the same time.=C2=A0 The regular dual =
filament bulb still worked as normal with the parking light and turn =
signal.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'>As a side note, =
some of the MGA=E2=80=99s (not all of them, but just a few years) had a =
special electrical box of some kind under the bonnet that allowed three =
functions using the two filaments in the rear outer lamp =
assemblies.=C2=A0 I first noticed this when I saw an MGA with just the =
outer assembly (no brake light in the center), similar to our =
TR2=E2=80=99s and 3=E2=80=99s, and it had the standard two filament bulb =
on each side.=C2=A0 I asked the owner how he got three functions with =
only two filaments and he shrugged his shoulders.=C2=A0 He had the =
wiring diagram with him so I looked it over and it=E2=80=99s a solid =
state (I think) or electro-mechanical black box device that allows a =
dual function for one of the filaments.=C2=A0 I=E2=80=99m guessing that =
it was the brakes and turn signals on the same filament, but not =
sure.=C2=A0 Still, it was pretty slick.=C2=A0 I was more curious than =
anything so I never looked into it further.=C2=A0 That was a few years =
ago.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'>Mike =
Hado<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif";color:black'><o:p> </o:p><=
/span></p><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>Jack Wheeler =
via Fot<br><b>Sent:</b> Tuesday, February 11, 2020 9:03 AM<br><b>To:</b> =
FOT List<br><b>Subject:</b> [Fot] Technical =
Question<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif"'>Has =
anyone with a street TR-2 or early TR-3 rewired the brake light so the =
outer lamp fixtures (tail lights) come on when the brake pedal is =
depressed? Originally, these cars were wired so that the brake =
light was in the same fixture as the license plate lamp. Only one =
lamp - a safety issue. I have heard of people re-wiring it so that =
the outer lamps (tail lights) also come on when the brake pedal is =
depressed (like the later TR-3's). Does anyone know how to wire it =
to make this happen? Thanks for your =
help.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif"'><o:p>&nbs=
p;</o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Helvetica","sans-serif"'>Jack<o:p>=
</o:p></span></p></div></div></div></body></html>
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