[06S40]

Hi All,
Can anyone tell me how to remove either cigarette lighter (but preferably the back one) on my '06 S40?
Or how to remove the little panel inside the well in the armrest?

The reason for this is that I want to connect a trailing cigarette lighter socket to the back of it, which I will leave under the passenger's seat and plug the Tomtom charger into it, thereby getting it out of the way when changing gears.

Thanks