Rear view mirror clown nose

[skmattwell]

Noticed mine was missing the other day. It's the little bulb shaped piece that hangs from the bottom of the rear view mirror

 

[Street]

I can do a replacement mirror with clown nose if you can’t find one on its own. £25 + postage.
I won’t split as it renders the mirror pretty much worthless I’m afraid.

 

[skmattwell]

I can do a replacement mirror with clown nose if you can’t find one on its own. £25 + postage.
I won’t split as it renders the mirror pretty much worthless I’m afraid.

Is it auto dimming?