2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 448Get this manual
ELECTRICAL ('04'05) REAR BRAKE LIGHT SWITCH Disconnect the rear brake light switch 2P black connector and check for continuity between the switch side connector terminalsThere should be continuity with the rear brake pedal depressed and no continuity with the pedal released
REAR BRAKE LIGHT SWITCH CONNECTOR
CARBURETOR HEATER
INSPECTION
Disconnect the carburetor heater 2P connector and measure the resistance between the heater side connector terminalsSTANDARD: 1315 at 20C (68F) If the resistance is out of above range, replace the carburetor heater
CARBURETOR HEATER CONNECTOR