[Healeys] Distributor to spark plug lead continuity

[Linwood Rose]

Don’t know how distributor cap turned into radiator cap?????
Lin

Sent from my iPhone

> On May 21, 2020, at 11:30 AM, Bob Spidell <bspidell at comcast.net> wrote:
> 
>  First, why on earth did you have a spark plug lead on a radiator cap??? (presume you meant 'distributor' cap?)
> 
> 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).
> 
> Bob 
> 
> 
> On 5/21/2020 7:55 AM, Linwood Rose via Healeys wrote:
>> Hi guys,
>> 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.
>> 
>> 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.
>> 
>> Could someone interpret these findings for me?
>> 
>> Thanks, as always.
>> 
>> Lin
>> 
>> <IMG_0608.jpeg>
>> 
>> 
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