2006 Honda TRX680 Rincon Factory Service Manual, Page 555Get this manual
LIGHTSMETERSSWITCHES
BRAKE LIGHT SWITCH
FRONT BRAKE LEVER
NOTE: The lower switch is the front brake light switchDisconnect the front brake lever switch connectors and check for continuity between the switch terminalsThere should be continuity with the front brake lever squeezed and no continuity with the lever released
BRAKE LIGHT SWITCH CONNECTORS