Spark plug wires

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  • OLDENUFF
    • Jan 2026
    #1

    Spark plug wires

    Can I use supression core wires on my 79 GS750 with stock coils and points type ignition? Thanks for any advice.
    Tags: None
    • SqDancerLynn1
      #2
      Yes but you need to use the auto type ends

        Comment

        • Guest
          #3
          Originally posted by SqDancerLynn1
          Yes but you need to use the auto type ends
          Why?.......

            Comment

            • Redman
              Forum LongTimer
              Past Site Supporter
              • Mar 2004
              • 13718
              • Michigan, west Michigan
              #4
              Originally posted by Octain
              Why?.......
              Mo'cycle spark plug caps have the resisitor (5 kilo ohm) in them because the wires do not. If you use wires with the resistance (supressors) then you dont want the caps that do.

              .
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                Comment

                • Steve
                  GS Whisperer
                  • Jun 2005
                  • 35924
                  • southwest oHIo
                  #5
                  As mentioned, the caps are already "supressor" type caps.

                  If you install "supressor" type wires, you don't want "supressor" caps, too.

                  One or the other, but not both.

                  .
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                    Comment

                    • Guest
                      #6
                      Originally posted by Steve

                      One or the other, but not both.

                      .

                      Ok, I got that But why not?
                      I purchased cheepy wires at the auto parts store used with the NGK ends.
                      No idea if the wires are resistor type wires. What harm will if cause if they are?

                        Comment

                        • JEEPRUSTY
                          #7
                          Originally posted by Octain
                          Ok, I got that But why not?
                          I purchased cheepy wires at the auto parts store used with the NGK ends.
                          No idea if the wires are resistor type wires. What harm will if cause if they are?

                          Plug Caps n Coils FAQ
                          http://faq.f650.com/FAQs/PlugCapsnCoils.htm


                          some good reading on the subject

                            Comment

                            • gearhead13
                              #8
                              From my understanding, you need at least one of the wires, plugs or caps to have resistors in them. A lot of bikes have the resistor caps and resistor plugs and thats fine you just wont have as much spark energy. I run non resistor plugs and non-supression wires with ngk resistor caps.

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