Just installed these. Tips, the plastic panel you must remove to access the socket seems tricky, like you may break it. A flat screw driver on the slot then pry up the middle. This will unlock the center hook. Hold the opening open with a finger and slide the screw driver to either side where you'll find the next hook. Push the screw driver in to unlock the hook while prying up that spot. It will unlock, then move to the corner and do the same. Repeat on the other side. Once the hooks along the slotted side are loose the panel will hinge open and fall out.
The bulb socket turns counter clockwise to unlock about a quarter turn. Remove socket and pull out old bulb. Insert new bulb.
The LED is substantially longer than the old OEM bulb and this makes it hard to get the socket turned around to get inserted back into the housing. Be careful not to damage wires when doing this. There's a retainer clip for the wiring next to the socket. Removing the wire from this retainer will give you a little more room to work with.
Hinge the panel back into place while carefully aligning the hooks and slots. Cover panel simply snaps back in.