2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 447Get this manual
ELECTRICAL ('04'05)
HANDLEBAR SWITCH
INSPECTION
Remove the top cover (page 3-5)Disconnect the handlebar switch 4P connector and headlight 3P black connectorHEADLIGHT 3P CONNECTOR
HANDLEBAR SWITCH 4P CONNECTOR Check for continuity between the switch side connector terminals in each switch positionContinuity should exist between the color coded wires as shown below: ENGINE STOP SWITCH COLOR Blackwhite Green DIMMER SWITCH LIGHTING SWITCH