I just purchased the sunglass tray unit that replaces the cig lighter part #51-16-7-132-376; however, my sunglasses dont fit. As a result, I will not be installing it on my E92. I also bought 2 extra inserts for it. I paid $36.42 from Tischer BMW after shipping. If anyone is interested in it, PM me an offer. I can return it, but I have to pay shipping and a restocking fee, so I figured I would put it on here first before returning it. Here are the DIY instructions with pictures -
http://www.e90post.com/forums/showthread.php?t=7049