<div dir="ltr">Lin<div><br></div><div>To reduce interference as we had in the 1950s, resistance was added in the plug leads. Early televisions that were 405 lines and received on a lower frequency than today; interference was so bad that a taxi idling outside the house was enough to totally break up a picture. People who did not fit suppressors were so unpopular that most people fitted them to have a peaceful life The elbow plug caps were marked 10,000 ohms. As an alternative plug leads with something like carbon filaments were available. The problem with these was that sometimes the resistance element went much higher or went completely open circuit. There was then sparking inside the cable which meant that there was not enough spark left to ignite the fuel.</div><div><br></div><div>Maybe these leads supplied today are more reliable but I prefer solid copper leads with resistive plug connectors. Sometimes you could fit a set on the end of each lead but just one in the lead coming from the coil to the distributor is fairly effective. These were supplied with male and female threads so could easily be fitted into early Lucas distributors</div><div><br></div><div>Best regards</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 21 May 2020 at 16:49, Gil Rockwell <<a href="mailto:gilrockwell@gmail.com">gilrockwell@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US" style="overflow-wrap: break-word;"><div class="gmail-m_580416860043290707WordSection1"><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Hi Lin,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">These are resistance wires to suppress ignition “noise” and that reading is fine, around 800 ohms, based on the fact you’re using the continuity scale. Check the old one, it should be similar assuming the new connector pierced the insulation and into the core.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">The only wires that will register a low resistance reading are solid core, copper conductor wires, which cause extreme static in the radio in the car and the cars around you, which is why manufacturers switched to the resistance or “suppression” wires.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p><div><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Gil<u></u><u></u></span></p></div><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p><div><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(181,196,223);padding:3pt 0in 0in"><p class="MsoNormal"><b><span style="font-size:10pt;font-family:Tahoma,sans-serif">From:</span></b><span style="font-size:10pt;font-family:Tahoma,sans-serif"> Healeys [mailto:<a href="mailto:healeys-bounces@autox.team.net" target="_blank">healeys-bounces@autox.team.net</a>] <b>On Behalf Of </b>Linwood Rose via Healeys<br><b>Sent:</b> Thursday, May 21, 2020 10:56 AM<br><b>To:</b> healeylist<br><b>Subject:</b> [Healeys] Distributor to spark plug lead continuity<u></u><u></u></span></p></div></div><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Hi guys,<u></u><u></u></p><div><p class="MsoNormal">Educate me. When doing some preventative maintenance, I pulled a spark plug lead out of the radiator cap (using a 123 distributor) the cable pulled away from the terminal - not a particularly unusual outcome. Got a new 90 degree terminal and crimped it on to the cable (Pertronix cable) and before I put the boot on the end of the cable I thought I would check the continuity. It barely dropped below 1.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">So then I checked a brand new, never used, cable made-up by AH Spares. As shown in the image below when the sensors are attached to each end of the cable I get a reading of .792 which is not sufficient to even sound the beeper on the multimeter device. I suppose there are degrees of continuity (not just on/off) but I guess I expected the alarm to sound and the reading to drop to near zero.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Could someone interpret these findings for me?<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Thanks, as always.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Lin<u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><img width="1280" height="960" id="gmail-m_580416860043290707_x0039_25FAFFB-DB36-4B5F-B7E3-B0BACCBB6C2D" src="cid:17237eeac904ce8e91"><u></u><u></u></p></div></div></div><div id="gmail-m_580416860043290707DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2">
<br><br>
<hr style="border:none;color:rgb(144,144,144);background-color:rgb(176,176,176);height:1px;width:99%">
<table style="border-collapse:collapse;border:none">
<tbody><tr>
<td style="border:none;padding:0px 15px 0px 8px">
<a href="https://www.avast.com/antivirus" target="_blank">
<img border="0" src="https://static.avast.com/emails/avast-mail-stamp.png" alt="Avast logo">
</a>
</td>
<td>
<p style="color:rgb(61,77,90);font-family:Calibri,Verdana,Arial,Helvetica;font-size:12pt">
This email has been checked for viruses by Avast antivirus software.
<br><a href="https://www.avast.com/antivirus" target="_blank">www.avast.com</a>
</p>
</td>
</tr>
</tbody></table>
<br>
<a href="#m_580416860043290707_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"> </a></div></div>_______________________________________________<br>
Support Team.Net <a href="http://www.team.net/donate.html" rel="noreferrer" target="_blank">http://www.team.net/donate.html</a><br>
Suggested annual donation $12.75<br>
<br>
Archive: <a href="http://www.team.net/pipermail/healeys" rel="noreferrer" target="_blank">http://www.team.net/pipermail/healeys</a> <a href="http://autox.team.net/archive" rel="noreferrer" target="_blank">http://autox.team.net/archive</a><br>
<br>
<a href="mailto:Healeys@autox.team.net" target="_blank">Healeys@autox.team.net</a><br>
<a href="http://autox.team.net/mailman/listinfo/healeys" rel="noreferrer" target="_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/healeys/ah100register@gmail.com" rel="noreferrer" target="_blank">http://autox.team.net/mailman/options/healeys/ah100register@gmail.com</a><br>
<br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Best wishes<div><br></div><div>John Harper</div><div><br></div><div>AHC UK 100 Register Secretary</div></div></div>