1984 Official Honda TRX200 Shop Manual, Page 260Get this manual
HONDA LIGHTSSWITCHES TAILLIGHT ASSEMBLY
Assemble the taillight in the reverse order of disassembly
ENGINE STOP SWITCH
Remove the fuel tank cover (Page 44)Remove the COl UNIT from the frame and pull up the wire connectorsCheck the switch for continuity between the Black and Green terminals with the switch "OF F"The switch is normal if there is continuity between the term ina ls OFF RUN COLOR TERMINAL BLACK IG GREEN E