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Aftermarket Tach install single or dual fire ingition

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    Aftermarket Tach install single or dual fire ingition

    I got a simple question. Im attempting to wire in a sunpro tac. to my GS850 and im wondering if the 81 Gs850g has a single or dual fire ignition. My wiring install will depend on which kind of ignition the Gs has

    Thanks - Gs850 Bobber

    #2
    Im not sure exactly what you're asking..(never heard the terminology before) but the GS series fires two cylinders at once, wasted spark system. Coil one fires 1-4 at the same time (only one cylinder is in compression stroke) and coil two fires 2-3 at the same time.

    The GS series bikes that have electronic tachs only feed from one coil if that helps at all..

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      #3
      What are some years that have elec. tachs so i can look at there wiring diagram.

      thanks _ gs850 bobber

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        #4
        i dont think any of these old ones had them, think he meant when people install a new electric tach on them thats what they do.

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          #5
          Originally posted by gs850 Bobber View Post
          What are some years that have elec. tachs so i can look at there wiring diagram.

          thanks _ gs850 bobber
          83 and later, at least in some models. 1983 750E for sure.


          Life is too short to ride an L.

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            #6
            Originally posted by Skateguy50 View Post
            i dont think any of these old ones had them, think he meant when people install a new electric tach on them thats what they do.
            1983 and on GS700/750ES 1100ES 1150E/ES all had electronic tachometers..

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