Author Topic: NGK Spark plug wire resistance  (Read 1942 times)

Offline Lbxpdx

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NGK Spark plug wire resistance
« on: August 29, 2023, 10:33:56 AM »
On the NGK wires for the K75, is there any allowable margin of error for the resistance measurement?  Such as 5k ohm + or - .2k?

Does any one have a set they would measure?
  • Portland
  • 1994 K75S, 1992 K75RT, 1972 R60/5 & 1977 R100S

Offline Laitch

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Re: NGK Spark plug wire resistance
« Reply #1 on: August 29, 2023, 12:11:49 PM »
On the NGK wires for the K75, is there any allowable margin of error for the resistance measurement?  Such as 5k ohm + or - .2k?
Don't know of one. You have old wires, or new? Do they have NGK right angle plug caps?
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline Lbxpdx

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Re: NGK Spark plug wire resistance
« Reply #2 on: August 29, 2023, 12:16:03 PM »
I still have what appear to be the original spark plug wires at 105,000 miles. I have located a set of used wires, the NGK ones that are appropriate for a K75, and they measure 4.8, 5.0, and 5.2K ohm.  I realized after posting this, that there may be a discrepancy due to overall length of each wire.
  • Portland
  • 1994 K75S, 1992 K75RT, 1972 R60/5 & 1977 R100S

Offline Laitch

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Re: NGK Spark plug wire resistance
« Reply #3 on: August 29, 2023, 12:26:32 PM »
I wouldn't worry about that. Plenty of members are riding with K75-dedicated NGKs and only one member has indicated receiving an intimation that he would go to Hell for buying them. He's still happily using them though.  :laughing4-giggles: Try to array them like the originals were when you replace them.
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Mighty Gryphon

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Re: NGK Spark plug wire resistance
« Reply #4 on: August 29, 2023, 12:39:41 PM »
Those numbers look close enough for the women I hang around with.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline Martin

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Re: NGK Spark plug wire resistance
« Reply #5 on: August 29, 2023, 05:17:12 PM »
Laitch I've been waiting in fear for nigh on 20 years. I expecting any day now to be dragged into the fiery pits of damnation. boohoo
 :blaaa
  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.

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