1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 209Get this manual
ELECTRICAL SYSTEM
SWITCHES
NOTE Engine stop switch, lighting switch and dimmer switch must be replaced as an assembly
(1) LIGHTING SWITCH
Remove the headlight case and disconnect the engine stop switchlighting switch wire coupler and connectorContinuity should exist between the color coded wires in each chart indicated by interconnected circles