I have a 1985 90 HP Evinrude and I am unable to find a kill switch that will fit into the control box in the slot provided. There are pleanty of the round ones around that look like an ignition switch but I need the one that is 1" long by 1/4" wide by 1 " tall and slides in between the ignition switch and the friction knob on the control box. This engine is mounted on a 16' Sportcraft Center Console and the safety lanyard is a good thing to have at 36 MPH. Thanks