1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 116Get this manual
Stop Circuit
The stop buttonkey switchand emergency stop switch are connected to the ignition module through the engine wiring harnessWhen activated, these switches direct the ignition module output to ground, stopping the ignition system
tJ emergency stop device
The steering
contains combination stop switch