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Coil

Discussion in 'Early CJ5 and CJ6 Tech' started by T Todd, Jan 24, 2005.

  1. Jan 24, 2005
    T Todd

    T Todd Mostly Confused

    Frazeysburg Ohio
    Joined:
    Jan 14, 2005
    Messages:
    111
    Do I need a ballast resistor on an early f head or can I just put 12 volts to the coil. Gotta hear this thing run.
     
    T Todd, Jan 24, 2005
    #1
  2. Jan 24, 2005
    taters55

    taters55 New Member

    Joined:
    Apr 20, 2004
    Messages:
    18
    On my 55 f-head I just put a 12 volt coil on with a built in resistor in the coil.
     
    taters55, Jan 24, 2005
    #2
  3. Jan 24, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    sparky, Jan 24, 2005
    #3
  4. Jan 24, 2005
    T Todd

    T Todd Mostly Confused

    Frazeysburg Ohio
    Joined:
    Jan 14, 2005
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    111
    So probably OK to start it , but should have one to run it much ... Right? Just bought a new one from Kaiser Willys, Don't think its built in. Thanks.
     
    T Todd, Jan 24, 2005
    #4
  5. Jan 24, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    T Todd, you might check the link I posted.
     
    sparky, Jan 24, 2005
    #5
  6. Jan 24, 2005
    T Todd

    T Todd Mostly Confused

    Frazeysburg Ohio
    Joined:
    Jan 14, 2005
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    Thanks, Should have done a search in the first place huh?
     
    T Todd, Jan 24, 2005
    #6
  7. Jan 24, 2005
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
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    Sep 20, 2002
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    R) I didn't say it. ;)

    Just pointed you to the FAQ.
     
    sparky, Jan 24, 2005
    #7
  8. Jan 25, 2005
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,379
    I've always been curious about this since the factory service manual doesn't include a ballast resistor in the wiring diagram for the F-head, but does show one for the V6.
     
    Glenn, Jan 25, 2005
    #8
  9. Jan 25, 2005
    Steamer

    Steamer Thick and gritty!

    SW OR
    Joined:
    Oct 17, 2004
    Messages:
    389
    Glenn, if I'm not mistaken (as usual), the reason the diagram doesn't show a resistor is because the running voltage to the coil comes from the fuel gauge. There is a voltage regulator built in for the gauges and the coil circuit. At least that's how my 61 works.
     
    Steamer, Jan 25, 2005
    #9
  10. Jan 25, 2005
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,379
    Hmmm. The ignition wire from the switch and the wire to the coil are on the same terminal though. It seems as the regulator is only for the temp. gauge.
     
    Glenn, Jan 25, 2005
    #10
  11. Jan 25, 2005
    64kg

    64kg New Member

    Quincy, Ill
    Joined:
    Oct 3, 2002
    Messages:
    39
    Ran a 12 volt wire directly to the coil. Lasted a couple of days before it fried my points. I am now back to running the power from my dash.
     
    64kg, Jan 25, 2005
    #11
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