Hi friends, I bought the interior light with the clock, but on the left side there is a dark red "ball" which contain a kind of sensor, there is a red led light and a small button ( a kind of "reset" I guess) . does anybody know about this? What it is, how it works, and how to make it work in my mk1? My sporting does not have such thing on the interior light... Thanks for your help.. http://www.fiatalfadealerparts.co.uk/images/source/SDC13748.JPG
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