2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 468Get this manual
IGNITION SYSTEM (After '05)
COMPONENT LOCATION
IGNITION SWITCH THROTTLE LEVER SWITCH
SPARK PLUG ENGINE STOP SWITCH CARBURETOR SWITCH FANIGNITION CONTROL MODULE (ICM) THROTTLE POSITION SENSOR
IGNITION COIL
ALTERNATOR (EXCITER COIL)
IGNITION PULSE GENERATOR
SYSTEM DIAGRAM
FANIGNITION CONTROL MODULE