So after replacing the whole of the drivers side wing mirror after the nice white man smashed it off I notice I have a crack in the passenger indicator glass/plastic. Are these replaceable on their own or are they part of the whole thing? It is not hugely noticeable, just blooming annoying to me!!!!! I suspect it occurred on one of our very narrow roads around here. There has been so much tree debris hanging into the roads after all the horrific weather and I know I have gone a bit close to the hedge on more than one occasion. oh: