2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 445Get this manual
ELECTRICAL ('04'05) REMOVALINSTALLATION Remove both front fenders (page 3-6)Disconnect the headlight 3P black connector
HEADLIGHT 3P CONNECTOR Remove the two headlight mounting bolts
Tilt the headlight forward and remove it by releasing the two bosses from the mounting rubbersInstall the headlight in the reverse order of removal