Well I wasn't kidding when I said I'm particularly slow about getting round to doing this type of thing as its taken me just over a year to get round to retrofitting some of the original bulbs with LEDS but I just wanted to update this thread!
As previously mentioned I purchased some Philips Ultinon Pro6000 LEDS and had already replaced the front sidelights to great effect but unfortunately they don't manufacture the H21W as installed in the front indicators which basically only left the rear light cluster of P21W indicators & stop/taillights.
Interestingly the LEDS would not work in any way, shape or form as stop/taillights due I believe to them being controlled by varying power to alter their state unlike traditional bulbs which would normally be 12v switched two filament although the BMW uses single filament type and are modulated by the bikes electronics.
I know from experience that LEDS can be fussy when I went over to LEDS in the house and they would not work nicely with dimmer switches.
Basically that only left the rear indicators so I swapped those out and the LEDS appear brighter & sharper if that makes sense? Maybe a better way to describe the difference would be to say the OEM bulbs are not as bright and look a little lazy compared to LED. I could have dodged a bullet by not being able to replace all four indicator bulbs as Rich found out because I ran the risk of having them speed up to a rate that may have been an MOT failure.
I did however replace those orange front indicator lenses with a pair of clear lenses with orange bulbs that I have to say have given the front end a much cleaner & nicer look. It really appeared dated with those orange lenses and it now has a much more modern appearance IMHO.


Not only that but I replaced all of the shiny, silver Torx fasteners that were used to secure black plastic panels such as upper & lower inner fairing trims, mudguard and a few other bits & pieces with M5 Torx T25 A4 (Marine) Stainless Steel flanged button screws of various lengths which I feel has given an even cleaner appearance to the front end.
I'm on a roll today having been through all my old posts modifying the photo links to get them to display again and I would have posted a couple of videos showing the before vs after of the indicators but they only display as photos so if anybody knows how to drop a video link from Google Drive I'm all ears.
I could I suppose insert a couple of hyperlinks but I was hoping to embed them in this post but for those that may be interested;
https://drive.google.com/file/d/1Jz0N-6XkIo3DfRdZgGkVM0A4lD6gWQoT/view?usp=share_linkhttps://drive.google.com/file/d/1iYk6zwg1QGoQszQtJRTqKpxFXZFIBX5o/view?usp=share_link-=Glyn=-