22/09/2019: While cleaning the nose cone this morning I spotted that one of the indicators was held together with insulation tape. Not unusual for a car of this type I suspect but an easy fix.
I had a quick look at what the problem was (perished rubber mount) and then ‘fixed’ it again with some heavy duty tape. This one can wait to the winter to fix but I think that I have already found the parts I need. Just need to check if they are LED or not.