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1978 ferrari 308 GTS RPM gauge

Discussion in 'Technical Q&A' started by Barnone 308, Feb 28, 2018.

  1. Barnone 308

    Barnone 308 Formula Junior

    Mar 22, 2004
    430
    canada
    Hi Everyone,

    Just finished a valve adjustment on my car. After putting everything back together started the car and RPM gauge does not work. Anyone know were the engine wires are for the RPM gauge. Been trying to look at manuals cannot find it.
     
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  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    20,319
    Texas
    Full Name:
    Steve Magnusson
    Do you have the MN (brown-black) wire connected to the ballast resistor as shown on page 74 of the 150/78 OM?
     
  4. Barnone 308

    Barnone 308 Formula Junior

    Mar 22, 2004
    430
    canada
    Hi Steve,

    I removed the black wire as I just installed a pertronix ignition on my P1-4 distributor. I have no more black wires connecting from coils to R1 points. The Brown wire is still connected.
     
  5. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    20,319
    Texas
    Full Name:
    Steve Magnusson

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