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[Fot] Negative Ground TR-3A

To: "fot@autox.team.net" <fot@autox.team.net>
Subject: [Fot] Negative Ground TR-3A
From: Jack Wheeler <jwheeler1947@yahoo.com>
Date: Thu, 2 Jul 2026 16:50:59 +0000 (UTC)
Authentication-results: autox.team.net;
Delivered-to: mharc@autox.team.net
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References: <1819975508.859322.1783011059813.ref@mail.yahoo.com>
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My 1960 TR-3A was shipped from the factory with the battery positive termin=
al as the ground.=C2=A0 When I restored the car many years ago, I switched =
it over to negative ground.=C2=A0 Someone had given me some instructions th=
at I followed, and it seemed to work.=C2=A0 About 2 years ago, I replaced t=
he battery and suspecting a charging problem, I also changed the generator =
and voltage regulator.=C2=A0 Since then, whenever I took the car on a long =
drive for a few days, the battery would run down.=C2=A0 I took my generator=
 to an old electrical shop and he tested it on a bench test and said it was=
 charging just fine.
I can't remember if I had polarized the new generator and voltage regulator=
 when I replaced them.=C2=A0 So, I polarized them again, using some instruc=
tions I got from the Roadster Factory.=C2=A0 Now the ignition switch and am=
p gauge are backwards.=C2=A0 When the key is in the off position, the ignit=
ion light comes on and the engine will start and run.=C2=A0 When the key is=
 in the on position, there is nothing.=C2=A0 When I started the engine, the=
 amp gauge went negative.
Anyone have any idea what I could have done to get this switched around?=C2=
=A0 And, therefore, what I need to do to switch it back?
Thanks for your help.
Jack Wheeler
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<html><head></head><body><div class=3D"yahoo-style-wrap" style=3D"font-fami=
ly:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir=
=3D"ltr" data-setdir=3D"false">My 1960 TR-3A was shipped from the factory w=
ith the battery positive terminal as the ground.&nbsp; When I restored the =
car many years ago, I switched it over to negative ground.&nbsp; Someone ha=
d given me some instructions that I followed, and it seemed to work.&nbsp; =
About 2 years ago, I replaced the battery and suspecting a charging problem=
, I also changed the generator and voltage regulator.&nbsp; Since then, whe=
never I took the car on a long drive for a few days, the battery would run =
down.&nbsp; I took my generator to an old electrical shop and he tested it =
on a bench test and said it was charging just fine.</div><div dir=3D"ltr" d=
ata-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">I can=
't remember if I had polarized the new generator and voltage regulator when=
 I replaced them.&nbsp; So, I polarized them again, using some instructions=
 I got from the Roadster Factory.&nbsp; Now the ignition switch and amp gau=
ge are backwards.&nbsp; When the key is in the off position, the ignition l=
ight comes on and the engine will start and run.&nbsp; When the key is in t=
he on position, there is nothing.&nbsp; When I started the engine, the amp =
gauge went negative.</div><div dir=3D"ltr" data-setdir=3D"false"><br></div>=
<div dir=3D"ltr" data-setdir=3D"false">Anyone have any idea what I could ha=
ve done to get this switched around?&nbsp; And, therefore, what I need to d=
o to switch it back?</div><div dir=3D"ltr" data-setdir=3D"false"><br></div>=
<div dir=3D"ltr" data-setdir=3D"false">Thanks for your help.</div><div dir=
=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"fa=
lse">Jack Wheeler</div></div></body></html>
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