Viking Husqvarna repair/ replacement parts.  Twin switch assembly from Viking 990.  Included on bracket On/Off button and Straight stitch or Zig zag switch button. Plastic switches mounted on metal frame bracket with attached springs.  Complete switch unit without mounting screws.   Price includes shipping to lower 48.  Return for refund if fails on your machine.  Why pay $$$$ new, if you can find it, when you can get used for less?.