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Coil

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

  1. T Todd

    T Todd Mostly Confused

    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. taters55

    taters55 New Member

    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. sparky

    sparky Sandgroper Staff Member Founder

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

    T Todd Mostly Confused

    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. sparky

    sparky Sandgroper Staff Member Founder

    T Todd, you might check the link I posted.
     
    sparky, Jan 24, 2005
    #5
  6. T Todd

    T Todd Mostly Confused

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

    sparky Sandgroper Staff Member Founder

    R) I didn't say it. ;)

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

    Glenn Kinda grumpy old man Staff Member

    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. Steamer

    Steamer Thick and gritty!

    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. Glenn

    Glenn Kinda grumpy old man Staff Member

    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. 64kg

    64kg New Member

    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