When I switched to the mag I got the Merc. kill switch from Rex.
BTW- Hey Steel I thought our agreement on a subject should be remembered, Check out my sig.
LOL...I'm honored.
My kill switch is one for a PWC. It can be wired normally open, or normally closed. I believe it's just a spring actuated plunger with a couple of contacts. Got it at West Marine or Boater's World, one or the other.