Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 325Get this manual
Emergency Stop Switch Check for continuity between the terminalsThere must be continuity between the terminals marked with circle in the table belowBlackRed Normal Push or remove clip Black
[I] IGNITION SWITCH
EMERGENCY STOP SWITCH
Ignition Switch
Check for continuity between the terminalsThere must be continuity between the terminals marked with circle in the table belowOFF