1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 226Get this manual
LIGHTSSWITCHES
IGNITION SWITCH
Disconnect the ignition switch wire connectorsCheck the switch for continuity between the black white and green wires ith the switchOFF", and the red and black with the switchON",
IG OFF ON
(1) DIMMER
The sWItch IS normal1f ther IS continuity between the circuits marked "0-0"
(2LIGHTING SWITCH
HANDLEBAR SWITCH
The handlebar switch (lighting dimmer switches, engine stop switch, starter switch) must be replaced as an assemblyDisconnect the handlebar switch ire couplers