2001-2003 Honda TRX500FA Factory Service Manual, Page 387Get this manual
HONDAMATIC REPLACEMENT Release the switch wire from the wire clips on the steering shaft holder
Remove the handlebar cover (pag 14-4 )Remove th two screws and switch holderRemove the mode select switch from the cover white pushing in the two stoppersInsta ll new switch by aligni ng he locating tab wi th th groove in the coverInsta ll th switc hol der and secure it ith the
screwsRoute he sw itch wire properly (page 1-19) and
co nne ct the 4P co nnectorInst all the rem ov ed parts the reverse rd er of removal
THROTTLE SENSOR