Having just shelled out £200 for the third time in as many years, I really wanted to find some protection for the FTP lights. I contacted many companies that make headlight protection products but they are all made for specific vehicles and absolutely no one I called would make them to measure.
I came across www.lamin-x.co.uk and ordered a 300mm x 200mm sheet of 1.00mm thick clear light protection film which I installed recently on the clear lens only as I have never had damage to the indicator lens. In practice, the 1mm is quite thick and I wasn't sure it would look OK when it first arrived, but it is not noticeable at all, even with close up inspection.
Only time will tell if it does the trick but for less than £20 it is worth a try.
Cheers
Graham