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99 Cadillac Deville
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Discussion Starter · #1 ·
My brother in law visited this weekend and asked me about this strange looking piece in the headlight assembly of my wife's 99 Deville. I don't know what it is or what it does. Could someone explain, please? This picture was taken on the driver side. I called it a sensor but I don't know if that is accurate.
 

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