2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 496Get this manual
24LIGHTSSWITCHES (After '05)
COMPONENT LOCATION SERVICE INFORMATION BULB REPLACEMENTBRAKETAILLIGHT IGNITION SWITCH HANDLEBAR SWITCH
24-2 24-3 24-4 24-6 24-7 24-7
CLUTCH SWITCH (TRX450ER only) BRAKE LIGHT SWITCH