The one I have is affixed below the Interior Mirror T.T.T. before these were fitted by a Qualified VAT Reg Auto elect for Insurance Purposes, I made sure that these were legal, & they are, but common tells you not to put them in your vision, the one I have is fixed by a Sucker, the rear one is centred. Pip, there have been a lot of problems in the Blackburn Area with Persons taking out their Brake light Bulbs for gain, I don't think I need say who these people are.