Can someone explain something of an oddity? I refer to the lenses of the dashboard warning lights. Although this is specifically about Aprilia some of this may concern other models but I will return to the lenses in a minute.
The dashboard of my car has holes for four of these screw-in lenses but looking at a variety of photos on the Web I see several series one Aprilias with four holes although most have only two. And the colours seem to vary as well, with one red and one yellow being most common but there is a variety, one has two yellow, two red, another has one red and one blue.
But now to the main point of this query, the lenses themselves. I have four, see photo. The two on the left have glass, as one would expect, and you can see light through them. However the other two, on the right, pass no light and if you look at the rear you can see why. So, what are they for? Just fillers? Surely not. But they are nicely made so not cheap and surely they must have a purpose other than blanking a hole, a hole that need not actually be there. There might seem to be a tiny hole in the centre of the cone of the one bottom right but not so, you cannot pass a needle through nor light of course.
This puzzle has been discussed by two of our experts and one found that what he had and thought was a normal lens is, in fact, one of these odd, closed jobs.
Can anyone throw any light on the subject and is this peculiar to Aprilias or other models as well?
