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  • #1

    UnKnown Part

    Where does this part bolt to and what is it?
    http://www.bjittech.com/part1.jpg

    Thanks.
    Bill
    1980 XS1100 SG
    Jardine Spaghetti with Harley Mufflers
    Tags: None
  • #2
    Under tank left side of frame. Its a ballast resistor.

    It bumps resistance of coils in early bikes from 1.5 ohms to 3 ohms. Late bikes have 3 ohm coils and no ballast resistor.
    If you run 1.5 ohm coils with no resistor the TCI can be damaged by too low resistance.

    That is my understanding of how it all works.

    John
    Last edited by jwhughes3; 06-26-2015, 12:10 PM.
    John is in an anonymous city with an Alamo (N29.519227,W-98.678980)

    Go ahead, click on the bikes - you know you want to...the electrons are ready.
    '81 XS1100H - "Enterprise"
    Bob Jones Custom Navy bike: Tkat brace, EBC floating rotors & SS lines, ROX pivot risers, Geezer rectifier, new 3H3 engine

    "Not all treasure is silver and gold"

    Comment

    • #3
      Originally posted by jwhughes3 View Post
      Under tank left side of frame. Its a ballast resistor.

      It bumps resistance of coils in early bikes from 1.5 ohms to 3 ohms. Late bikes have 3 ohm coils and no ballast resistor.
      If you run 1.5 ohm coils with no resistor the TCI can be damaged by too low resistance.

      That is my understanding of how it all works.

      John
      Found it. Thanks.

      Bill
      1980 XS1100 SG
      Jardine Spaghetti with Harley Mufflers

      Comment

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