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Technical Sun Tach Hookup

Discussion in 'Traditional Hot Rods' started by fins2nv, Nov 24, 2014.

  1. fins2nv
    Joined: Apr 28, 2011
    Posts: 47

    fins2nv
    Member
    from Fargo, ND

    I have a number of old tachometers that have been sitting on a shelf for years. I dusted off a Sun Super Tach II today and thought it would look cool in the Model A. After I shined it up and mounted it, I thought it would be even more cool if it worked. I got on the interweb and found a manual for the tach and the hookup appears easy: power, ground and a wire to the negative side of the coil. Now the question: I am running a stock system, six-volts, positive ground. Has anyone hooked up a tach on the old system? How should I go about it?
     
  2. mj40's
    Joined: Dec 11, 2008
    Posts: 3,303

    mj40's
    Member

    The old Sun tacks used a box to hook the tack to that was 6 volt friendly.
     
  3. The "black box" also was cyl dedicated...4 cyl,6 cyl,8cyl all used different black boxes,,You will need one for a 4cyl,6 volt,,
     
  4. fins2nv
    Joined: Apr 28, 2011
    Posts: 47

    fins2nv
    Member
    from Fargo, ND

    Thanks guys.
     

  5. Lobucrod
    Joined: Mar 22, 2006
    Posts: 4,122

    Lobucrod
    Alliance Vendor
    from Texas

    The Super Tach II does not require the sender but it does require 12 volts. The earlier ones may be dedicated to 4, 6 or 8 cylinders and should be stamped as such on the back. Also should say 12V+ where the power lead hooks up. Newer ones should have a switch to change between 4,6, or 8 cyl but still require 12 volts. I have been looking for an old sun tack to use in my 409 powered 38 Chevy Coupe gasser so PM me if you would consider getting rid of it. I got stuff to trade too.
     

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