2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 387Get this manual
LIGHTSMETERSSWITCHES REMOVALINSTALLATION Remove the two trim clips, four tapping screws and the taillight assembly from the rear fenderRemove the taillight bulb (page 21-5)Remove the taillight cover from the taillight by releasing the three boss and grommetsAlign the bosses and grommets properly
TAILLIGHT
Install the taillight in the reverse order of removal
TRIM CLIPS GROMMETS SCREWS