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Thread: DS-650

  1. #1
    MasterBomB Guest

    Default Bombardier DS650 MSD pn4205

    I have purchase this and I was later told that my tach would not work after install. The early Tachs have a glass lens and funtion fine but the new DS650 tach's have a plastic lense and these do not. ( so I was told). I was told the new tach's dont support square wave?? Is there an adapter I can buy to allow my tach to work with this MSD ignition? 2006 DS650x Baja

  2. #2
    MasterBomB Guest

    Default Negitive side

    Looking at my schmatic the tack has 3 wires b+, gnd, and the 3rd wire connects to the negitive side of one of the 2 coils. it is a single cyl. with 2 coils and 2 plugs.

  3. #3
    MasterBomB Guest

    Default Anyone?

    Any help would be appriciated

  4. #4


    The signal that is produced by the MSD DS650 Ignition is a 12 volt square wave. Most aftermarket tach’s can be adjusted to work. I know on some of the tachs that came on the DS 650’s are nonadjustable. If your tach is nonadjustable an aftermarket tach will be needed.

    Thank you

  5. #5
    MasterBomB Guest

    Default Thats what I was afraid of

    My tach is non- adjustable Oh well

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