1999-2004 Honda TRX400EX FourTrax Service Manual, Page 249Get this manual
LlGHTSlSWlTCHES Pull the taillight bulb out of the socket-
Install new bulb and the socket in the reverse order of removal
NEUTRAL INDICATOR
Remove the indicator lens from the bulb socketRemove the neutral indicator from the front fenderPull the indicator bulb out of the socket, Install new bulb, the lens and socket in the reverse order of removal
IGNITION SWITCH
INSPECTION
Disconnect the ignition switch connectorsCheck for continuity between the connector terminals in each switch positionContinuity should exist between the color coded wires as follows: Color Position