My next retrofit electrical mod is a rain sensor. I have managed to source an Astra G rain sensor with electric mirror and cover (thanks Dean, Andy and Chris ). I have sorted out the wiring diagram (which will be posted on my autobiog once proven) but what I really need to do is determine the best screen attachment for the sensor............

Should there be a bracket or are they glued to the screen?

Any help on this will be appreciated. I know they a quite rare on the Astra G's...............

Cheers,
Dave