1999 "EE" Outboards Accessories Service Manual, P/N 787026, Page 203Get this manual
Key Switch Function
1With the engine key switch in OFF position, the tester IGNITION light should be off If the IGNITION light is on, troubleshoot the blackyellow and blackwhite circuits for an open, and check the key switch
2Turn the engine key switch to ON position, the tester SWITCHED B+ and IGNITION lights should turn on If the SWITCHED B+ light does not turn on, troubleshoot the redpurple and purple circuits for an open, and check the key switch If the IGNITION light does not turn on, troubleshoot for short between the blackyellow and blackwhite circuits, and check the key switch