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<body>I used a 3 ohm Pertronix coil, and so far it has worked flawlessly. After a new Lucas coil died in less than a year, I won't use Lucas again.<br><br>Another alternative is to check with your FLAPS. I walked into a NAPA store in a small town last year, and they had a 3 ohm coil on the shelf. It has worked fine so far as well (on a Ferguson tractor with the Standard engine). Price was over twice that of a Pertronix from Amazon, but I got to try it that afternoon.<br><br>For wires, I went with classic copper core wire, combined with plug connectors that have suppression resistors built in. The plug boots I used are normally sold for motorcycles, I found some 135 degree ones from NGK that fit nicely. On Amazon IIRC, but likely available at my friendly local motorcycle parts store :)<br><br>The other option I see is to convert completely to push-on connectors for the high tension leads and carbon core wires. There is a distributor cap available with modern (well, more modern anyway) push-on terminals that fits exactly in place of the original cap with the piercing screws. Used on MGB I believe, probably lots of other British cars as well.<br>-- Randall<br><br><div class="gmail_quote">On 13 June 2019 19:17:32 GMT-06:00, Dave MacKay <dave@mdmackay.ca> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<p dir="LTR"><span lang="en-ca"><font face="Calibri">Hello:</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">I’m looking to replace the</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">coil and</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">spark plugs wires on my TR3A. The car has been converted to negative ground and has a Crane</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">XR-700 electronic ignition. I’m a bit unsure about what I need.</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">1) Coil</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> </span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">U</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">sing</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">instructions that Randall posted several years ago</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">, I measured 3.8 o</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">hms</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> and</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">10.8 volts</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">from my existing</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> coil</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">That makes me think that I need a 12v non-ballasted coil.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">Is that correct?</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> </font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">The connect</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">or for the high tension lead (to the distribution) is a push</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">on; the t</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">wo small terminals on the coil</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> are threaded so that the wires are</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">attached</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> with nuts (not Lucar-typ</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">e connectors).</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">I would welcome any recommendations as to coil</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">s.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">I was thinking of a replacement like</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">Moss</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">#</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">143-220</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> (</font></span><span lang="en-ca"></span><a href="https://mossmotors.com/coil-ignition-push-on-coil-wire-lucas"><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><u><font color="#0563C1" face="Calibri">https://mossmotors.com/coil-ignition-push-on-coil-wire-lucas</font></u></span><span lang="en-ca"></span></a><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">) or</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">Moss # 143-221 (</font></span><span lang="en-ca"></span><a href="https://mossmotors.com/coil-ignition-push-on-coil-wire-aftermarket"><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><u><font color="#0563C1" face="Calibri">https://mossmotors.com/coil-ignition-push-on-coil-wire-aftermarket</font></u></span><span lang="en-ca"></span></a><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">).</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> </span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">2) Spark plug wires</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">I thought this would be simple, but it seems not.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">I was planning to buy Moss</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">571-005</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">(</font></span><span lang="en-ca"></span><a href="https://mossmotors.com/ignition-wire-set-push-in-style-cobalt-brand"><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><u><font color="#0563C1" face="Calibri">https://mossmotors.com/ignition-wire-set-push-in-style-cobalt-brand</font></u></span><span lang="en-ca"></span></a><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">)</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">but was told that they weren’t appropriate b</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">ecause of my Crane unit. I didn’t understand why.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> </span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">What sort of wires would I need for my TR3A</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">?</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">I don’t run a radio in the car so that I don’t imagine interference would be an issue.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">I had</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">thought I</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"> could ju</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">st buy any old spark plug wires</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">, but find I must make a number of choices:</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">resisto</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">r or non-resistor wire, solid core or</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">braided, type of cap</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri">,</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">screw-in,</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">etc.</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> </span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">What</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">does one need to know to select</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">spark plug wires</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">for</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">a TR3A?</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"><font face="Calibri"></font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"> <font face="Calibri">Any recommendations?</font></span><span lang="en-ca"></span><span lang="en-ca"></span><span lang="en-ca"></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">Thanks in advance,</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">Dave MacKay</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">1960 TR3A s/n 68639L</font></span></p>
<p dir="LTR"><span lang="en-ca"><font face="Calibri">Near Toronto, Canada</font></span></p>
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