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  1. #1
    Join Date
    Nov 2005
    Winston-Salem, NC, USA

    Default Mercury Tachometer hookup

    I have my gauge panel ready to install. I want to prewire everything just to make hookups easier.

    I have a Quicksilver Tachometer. What should the pulse-switch be set to for a 1978 1400? The tachometer from the boat it was on... only has "12V" "GRD" and "ALT". The new tach has "IGN=(12V)", "GRD=(GRD)". and the 3rd terminal is "SEND=(ALT)"... but what should the switch be set to?
    CHOICES ARE: 2P/4C, 3P/6C, 4P/8C, 5P, and 6P?
    It's already set to 6P- which I think is correct for Mercs with an Alternator like mine. But checking to be sure...


  2. #2
    Join Date
    Nov 2005
    Chesapeake, Va, US

    Default Re: Mercury Tachometer hookup

    6P is correct.
    Bill H PTC USN Ret
    A manual is a cheap investment.

  3. #3
    Join Date
    Nov 2005
    Winston-Salem, NC, USA

    Default Re: Mercury Tachometer hookup

    Thanks Bill....
    now you can go back to fshn...

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