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Thanks. I was taking a SWAG that it was impedance.<br>
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<div class="moz-cite-prefix">On 5/21/2020 10:35 AM, jim wrote:<br>
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<div dir="ltr" data-setdir="false">symbol on meter settings
indicates "diode test" ..Puts a known voltage across diode and
measures "diode turn on voltage" ie where it starts to
conduct ..not the same as ohms ...</div>
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<div dir="ltr" data-setdir="false">Jim<br>
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<div> On Thursday, May 21, 2020, 8:29:27 AM PDT, Bob Spidell
<a class="moz-txt-link-rfc2396E" href="mailto:bspidell@comcast.net"><bspidell@comcast.net></a> wrote: </div>
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<div> First, why on earth did you have a spark plug lead
on a radiator cap??? (presume you meant 'distributor'
cap?)<br clear="none">
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It looks like you have your multimeter set to diode test
(maybe that's how continuity works on your MM?). The
reading is probably ohms, indicating a very low
resistance circuit, but to be sure turn the MM control
knob one click clockwise, to the 200 ohm range ('200
omega'). It'll probably give the same reading; i.e.
.792 ohms, which is about what you'd expect from a short
stranded copper wire lead (IIRC, one ohm per foot of
cable is considered normal, even copper has some
resistance).<br clear="none">
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Bob <br clear="none">
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<div class="ydp88a2940dyiv5607545115moz-cite-prefix">On
5/21/2020 7:55 AM, Linwood Rose via Healeys wrote:<br
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<div class="ydp88a2940dyiv5607545115yqt2866999372"
id="ydp88a2940dyiv5607545115yqtfd04721"> Hi guys,
<div class="ydp88a2940dyiv5607545115">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.</div>
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<div class="ydp88a2940dyiv5607545115">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.</div>
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<div class="ydp88a2940dyiv5607545115">Could someone
interpret these findings for me?</div>
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<div class="ydp88a2940dyiv5607545115">Thanks, as
always.</div>
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<div class="ydp88a2940dyiv5607545115">Lin<br>
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