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Old 08-27-2017, 03:59 PM   #1
JBohannon
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Default Coil Wire Resistance

How do I check the high voltage Coil Wire from coil to distributor?
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Old 08-27-2017, 04:30 PM   #2
H. L. Chauvin
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Default Re: Coil Wire Resistance

Get a multi-meter and a coat hanger wire.

Set multi-meter to where it reads Ohms.

Coil wire and coat hanger wire should have about equal Ohms reading on the multi-meter.

GE analog multi-meters, (yellow), with moving arm, are about $10.00 at Wal-Mart.
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Old 08-27-2017, 08:00 PM   #3
BILL WILLIAMSON
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Default Re: Coil Wire Resistance

If it's real WIRE-WIRE, don't wurry about it!
Bill W.
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Old 08-27-2017, 08:50 PM   #4
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Default Re: Coil Wire Resistance

Standard swing meters (analog) will read 0 ohms when checking the resistance of a wire type coil wire.
If you want to know the actual resistance you will need a Biddle Meter which reads resistance of less than 1 ohm. (micro ohms).
or
Do what Bill says ...dont worry about it.
Biddle Meters are quite expensive.
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Old 08-27-2017, 09:14 PM   #5
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Default Re: Coil Wire Resistance

Per Les Andrews Blue troubleshooting book on page 2-5 you should have the following readings:

Measure ohms from (+) terminal to (-) terminal - 1.6 to 1.8 ohms

Measure ohms from (+) terminal to center (high tension) 6.7K to 10K ohms

Measure ohms from (-) terminal to center (high tension) 6.7K to 10K ohms

Measure ohms from each coil terminal (+ & -) to outer metal case of coil - Open Circuit

If any of these readings are wrong you have a defective coil.

Randy
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Old 08-27-2017, 09:26 PM   #6
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Default Re: Coil Wire Resistance

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its a wire you're not looking for resistance. a old style copper stranded plug wire will work. i dont know what is stock and show correct. to check a wire set your meter to continuity. with you meter set to ohm 0 is a show of continuity.

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Old 08-28-2017, 11:35 AM   #7
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Default Re: Coil Wire Resistance

Stranded metal (copper) wire is original. Resistance leads with the carbon impregnated thread are not recommended.
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Old 08-28-2017, 12:08 PM   #8
JBohannon
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Default Re: Coil Wire Resistance

The reason I ask I think I may have bought a new style wire a year or so ago. When I check for continuity I have none or almost zero ? That is not right is it ?
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Old 08-28-2017, 12:37 PM   #9
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Default Re: Coil Wire Resistance

No, that is not the proper reading for a coil wire made with copper.
Probably correct for a carbon filled coil wire, depending on the meter scale used,
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Old 08-28-2017, 12:51 PM   #10
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Default Re: Coil Wire Resistance

Regardless, just look for metalic wire in the end. Also thin cupped shaped ends should be soldered to the wire. Most auto parts stores might not have old style "secondary wire" because resistance wire began a faze out when car radios became popular, hence: "radio resistance wire". The term wire is used loosely as new stuff has no wire in it.
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Old 08-28-2017, 07:47 PM   #11
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Default Re: Coil Wire Resistance

Just buy the correct wire from A&L, Bert's, Bratton's, or Snyder's.
There is likely other small parts you need if you look through their catalogs.
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Old 08-29-2017, 01:18 AM   #12
Chuck Sea/Tac
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Default Re: Coil Wire Resistance

See post 6. O is the same as touching the two leads together.
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Old 08-30-2017, 03:16 PM   #13
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Default Re: Coil Wire Resistance

I was told by Pertronix to use resistance spark plug wire with their ignition system. I would also use it if I had a CB radio.
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