2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 434Get this manual
LIGHTSMETERSSWITCHES
ASSIST HEADLIGHT (Except AeM type TM model)
BULB REPLACEMENT
Remove the screw
Release the four tabs of the assist headlight upper cover from the slits in the front and lower coversDisconnect the breather joint hose from the pper cover and remove the coverHOSE
Disconnect the assist headlight connectorRemove the retaining ring by turning it counterclockwise and remove the bulb from the headlightInstall new bulb and removed parts in the reverse order of removalRETAINING RING