I marvel at the amazing knowledge of all of you on the GWOF and REALLY enjoy reading your posts. As a relatively new 2004 GL1800 owner (and mighty proud of it) I find that my right rear view mirror is broken. Can you tell me if the glass can be replaced by itself; or does the whole mirror assembly need replaced? Also.....my mirrors have an additional turn signal light next to the mirror itself. Is this original or might it be a special item that the prior owner had installed? Again, it is a great pleasure to own a Wing and to 'talk' to so many knowledgable people on this forum.