2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 479Get this manual
ELECTRIC SHIFT PROGRAM (ESP; FEFPE model)
REVERSE SHIFT SWITCH
INSPECTION
Remove the engine sub-wire harness 2P green connector from the frame and isconnect itCheck for con tinuity between the Gray wire termi nal of the engine side connector and groundThere should be continuity with the reverse selector lever operated and no continuity with the lever released2P REEN CONNECTOR