Subject: [TR] Puzzled by simple things. Looking for guidance

From: Dave MacKay <[email-masked]>
Date: Thu, 13 Jun 2019 21:17:32 -0400

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 Puzzled by simple things. Looking for guidance

Hello:

I=E2=80=99m looking to replace the coil and spark plugs wires on my TR3A. T=
he car
has been converted to negative ground and has a Crane XR-700 electronic
ignition. I=E2=80=99m a bit unsure about what I need.

1) Coil

Using instructions that Randall posted several years ago, I measured 3.8 o
hms and 10.8 volts from my existing coil. That makes me think that I need a
12v non-ballasted coil. Is that correct?

The connector for the high tension lead (to the distribution) is a push on;
the two small terminals on the coil are threaded so that the wires are
attached with nuts (not Lucar-type connectors).

I would welcome any recommendations as to coils. I was thinking of a
replacement like Moss #143-220 (
*https://mossmotors.com/coil-ignition-push-on-coil-wire-lucas*
<https://mossmotors.com/coil-ignition-push-on-coil-wire-lucas>) or Moss #
143-221 (
*https://mossmotors.com/coil-ignition-push-on-coil-wire-aftermarket*
<https://mossmotors.com/coil-ignition-push-on-coil-wire-aftermarket>).

2) Spark plug wires

I thought this would be simple, but it seems not. I was planning to buy Mos=
s
571-005 (
*https://mossmotors.com/ignition-wire-set-push-in-style-cobalt-brand*
<https://mossmotors.com/ignition-wire-set-push-in-style-cobalt-brand>) but
was told that they weren=E2=80=99t appropriate because of my Crane unit. I =
didn=E2=80=99t
understand why.

What sort of wires would I need for my TR3A? I don=E2=80=99t run a radio in=
 the car
so that I don=E2=80=99t imagine interference would be an issue.  I had thou=
ght I
could just buy any old spark plug wires, but find I must make a number of
choices: resistor or non-resistor wire, solid core or braided, type of cap,
screw-in, etc.

What does one need to know to select spark plug wires for a TR3A? Any
recommendations?

Thanks in advance,

Dave MacKay

1960 TR3A s/n 68639L

Near Toronto, Canada

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<title>Puzzled by simple things. Looking for guidance</title>
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<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Hello:</font></s=
pan></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I=E2=80=99m look=
ing to replace the</font></span><span lang=3D"en-ca"></span><span lang=3D"e=
n-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">coil and</font></=
span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"> <font face=3D"Calibri">spark plugs wires on my TR3A. The car has be=
en converted to negative ground and has a Crane</font></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=
=3D"Calibri">XR-700 electronic ignition. I=E2=80=99m a bit unsure about wha=
t I need.</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1) Coil</font></=
span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"> </span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">U</font></span><=
span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"=
><font face=3D"Calibri">sing</font></span><span lang=3D"en-ca"></span><span=
 lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">instruc=
tions that Randall posted several years ago</font></span><span lang=3D"en-c=
a"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Ca=
libri">, I measured 3.8 o</font></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">hms</font><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"><font face=3D"Calibri"> and</font></span><span lang=3D"en-ca"></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">=
10.8 volts</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font f=
ace=3D"Calibri">from my existing</font></span><span lang=3D"en-ca"></span><=
span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri"> coi=
l</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><spa=
n lang=3D"en-ca"><font face=3D"Calibri">.</font></span><span lang=3D"en-ca"=
></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cal=
ibri">That makes me think that I need a 12v non-ballasted coil.</font></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"> <font face=3D"Calibri">Is that correct?</font></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"C=
alibri"> </font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">The connect</fon=
t></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"><font face=3D"Calibri">or for the high tension lead (to the dist=
ribution) is a push</font></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">on; the t</font>=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"><font face=3D"Calibri">wo small terminals on the coil</font></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en=
-ca"><font face=3D"Calibri"> are threaded so that the wires are</font></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"> <font face=3D"Calibri">attached</font></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">=
 with nuts (not Lucar-typ</font></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">e connector=
s).</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I would welcome =
any recommendations as to coil</font></span><span lang=3D"en-ca"></span><sp=
an lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">s.</fo=
nt></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"> <font face=3D"Calibri">I was thinking of a replacement like</f=
ont></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span la=
ng=3D"en-ca"> <font face=3D"Calibri">Moss</font></span><span lang=3D"en-ca"=
></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cal=
ibri">#</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></spa=
n><span lang=3D"en-ca"><font face=3D"Calibri">143-220</font></span><span la=
ng=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font =
face=3D"Calibri"> (</font></span><span lang=3D"en-ca"></span><a href=3D"htt=
ps://mossmotors.com/coil-ignition-push-on-coil-wire-lucas"><span lang=3D"en=
-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font color=
=3D"#0563C1" face=3D"Calibri">https://mossmotors.com/coil-ignition-push-on-=
coil-wire-lucas</font></u></span><span lang=3D"en-ca"></span></a><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font fa=
ce=3D"Calibri">) or</font></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">Moss # 143-221 (=
</font></span><span lang=3D"en-ca"></span><a href=3D"https://mossmotors.com=
/coil-ignition-push-on-coil-wire-aftermarket"><span lang=3D"en-ca"></span><=
span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font color=3D"#0563C1" =
face=3D"Calibri">https://mossmotors.com/coil-ignition-push-on-coil-wire-aft=
ermarket</font></u></span><span lang=3D"en-ca"></span></a><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"C=
alibri">).</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></=
span><span lang=3D"en-ca"> </span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">2) Spark plug wi=
res</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">I thought this w=
ould be simple, but it seems not.</font></span><span lang=3D"en-ca"></span>=
<span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">I =
was planning to buy Moss</font></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">571-005</fo=
nt></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lan=
g=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en-ca"></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">=
(</font></span><span lang=3D"en-ca"></span><a href=3D"https://mossmotors.co=
m/ignition-wire-set-push-in-style-cobalt-brand"><span lang=3D"en-ca"></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"><u><font color=3D"#0563C1=
" face=3D"Calibri">https://mossmotors.com/ignition-wire-set-push-in-style-c=
obalt-brand</font></u></span><span lang=3D"en-ca"></span></a><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=
=3D"Calibri">)</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca=
"></span><span lang=3D"en-ca"> <font face=3D"Calibri">but was told that the=
y weren=E2=80=99t appropriate b</font></span><span lang=3D"en-ca"></span><s=
pan lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">ecaus=
e of my Crane unit. I didn=E2=80=99t understand why.</font></span><span lan=
g=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font f=
ace=3D"Calibri"></font></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"></span><span lang=3D"en-ca"> </span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What sort of wir=
es would I need for my TR3A</font></span><span lang=3D"en-ca"></span><span =
lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">?</font><=
/span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D=
"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en-ca"></span><s=
pan lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">I do=
n=E2=80=99t run a radio in the car so that I don=E2=80=99t imagine interfer=
ence would be an issue.</font></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca">=C2=A0<font face=3D"Calibri"></font>=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"> <font face=3D"Calibri">I had</font></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cali=
bri">thought I</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca=
"></span><span lang=3D"en-ca"><font face=3D"Calibri"> could ju</font></span=
><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-c=
a"><font face=3D"Calibri">st buy any old spark plug wires</font></span><spa=
n lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><f=
ont face=3D"Calibri">, but find I must make a number of choices:</font></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en=
-ca"> <font face=3D"Calibri">resisto</font></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">=
r or non-resistor wire, solid core or</font></span><span lang=3D"en-ca"></s=
pan><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri=
">braided, type of cap</font></span><span lang=3D"en-ca"></span><span lang=
=3D"en-ca"></span><span lang=3D"en-ca"><font face=3D"Calibri">,</font></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"> <font face=3D"Calibri">screw-in,</font></span><span lang=3D"en-ca"></s=
pan><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri=
">etc.</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span=
><span lang=3D"en-ca"><font face=3D"Calibri"></font></span><span lang=3D"en=
-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> </span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">What</font></spa=
n><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-=
ca"> <font face=3D"Calibri">does one need to know to select</font></span><s=
pan lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca">=
 <font face=3D"Calibri">spark plug wires</font></span><span lang=3D"en-ca">=
</span><span lang=3D"en-ca"></span><span lang=3D"en-ca"> <font face=3D"Cali=
bri">for</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></sp=
an><span lang=3D"en-ca"> <font face=3D"Calibri">a TR3A?</font></span><span =
lang=3D"en-ca"></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"><fon=
t face=3D"Calibri"></font></span><span lang=3D"en-ca"></span><span lang=3D"=
en-ca"></span><span lang=3D"en-ca"> <font face=3D"Calibri">Any recommendati=
ons?</font></span><span lang=3D"en-ca"></span><span lang=3D"en-ca"></span><=
span lang=3D"en-ca"></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Thanks in advanc=
e,</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Dave MacKay</fon=
t></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">1960 TR3A s/n 68=
639L</font></span></p>

<p dir=3D"LTR"><span lang=3D"en-ca"><font face=3D"Calibri">Near Toronto, Ca=
nada</font></span></p>

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