So, I am not sure if my 09 is an anomaly, but the description to "Turn and pull" a locking ring does not apply. There is no direction from the manual on actually changing a bulb ???, and advice I found here led me astray. ( only this one time...
) I found that there is a finicky little wire latch/clasp that sits under the boot, holding the adapter down, by hooking a tab. Push down, over, and it releases. PITA! Now that I figured it out, with a thumb and bic lighter, it will be easier next time. I just wanted to pass this on, and see if anyone else has this "system" on their headlight bulb.
Maybe I should just leave my helmet on permanently?
"Minds are like parachutes, they work best when open"