Tools:
  • 8mm socket
  • 10mm socket
  • ratchet for sockets
  • wire cutter
  • wire connector crimper


    • Optional for CDI box mounting:
  • fasteners
  • pliers
  • metal brackets
  • drill

    • Labor:


    Addition of a CDI box to the stock FC3S ignition system makes for a more powerful spark.  This allows for a more consistent ignition spark which makes for better power and efficiency.  Shown are two of the more popular CDI boxes - the MSD 6A and the Crane Cams HI-6.  MSD also offers the 6AL model, which is just an MSD 6A with a rev limiter built-in; since we're just using the CDI box on the leading coils, the rev limiter is not necessary.  Please check out out CDI box page here for more info: 
    http://fc3spro.com/TECH/MODS/IGN/cdi.htm

    FC3S Pro:  CDI Box Installation
    Leading coil (twin tower) assembly removed from chassis
    Ignitor is silver base on top.
    Coil is black component on bottom.
    Leading coil assembly with top cover removed.
    YELLOW arrows point to "+" and "-" marks.
    BLUE denote "+" and "-" posts.
    Leading coil assembly still bolted to engine bay with top cover removed>
    YELLOW arrow points to "+" mark on coil post.
    Other "-" mark is hidden under terminal below.
    CREAM wire is "+" coil input from ignitor.
    BLACK wire is "-" coil input from ignitor.
    These ring terminals will be removed and cut-off.
    Please read all MSD 6A instructions!
    MSD 6A install schematic:
  • Snip existing ring terminal from CREAM wire from ignitor and splice into MSD 6A thin RED wire.
  • Snip existing ring terminal from BLACK wire from ignitor and splice into MSD 6A thin WHITE wire.
  • Crimp new ring terminal on MSD 6A thin orange wire and secure on "+" post of coil.
  • Crimp new ring terminal on MSD 6A thin black wire and secure on "-" post of coil.
  • Crimp new ring terminal on MSD 6A thick (+) RED wire and secure on (+) POSITIVE battery terminal.
  • Crimp new ring terminal on MSD 6A thick (-) BLACK wire and secure on (-) NEGATIVE battery terminal.

    • MSD 6A unit requires secure mounting in a cool area away from engine heat!
    Please read all Crane Cams HI-6 instructions!
    Crane Cam HI-6 install schematic:
  • Splice HI-6 blue wire with HI-6 thin red wire; HI-6 should be in "4-cylinder" mode.
  • Snip existing ring terminal from CREAM wire from ignitor and splice into HI-6 thin RED wire.
  • Snip existing ring terminal from BLACK wire from ignitor and splice into HI-6 thin WHITE wire.
  • Crimp new ring terminal on HI-6 thin orange wire and secure on "+" post of coil.
  • Crimp new ring terminal on HI-6 thin black wire and secure on "-" post of coil.
  • Crimp new ring terminal on HI-6 thick (+) RED wire and secure on (+) POSITIVE battery terminal.
  • Crimp new ring terminal on HI-6 thick (-) BLACK wire and secure on (-) NEGATIVE battery terminal.
  • Set numerical thumbwheels to "01" - multi-spark and no rev-limiter.
  • Crane Cams HI-6 unit requires secure mounting in a cool area away from engine heat!




    • Questions?  Comments?  Send mail to:  reted@fc3spro.com

    02/23/2004