Originally Posted by doba_s
This is so not true ... I had them on 3 BMW's behind the grilles and never had any problems ... They worked every time I have been hit ... You just need to position them right ... that's all ...
and yes, they do look ugly and very noticeable on the picture above ... you wouldn't be able to drive like that in CA for sure ...
If you're off to the side of the car the grilles will block it if mounted behind. Also some people have had them mounted behind and were getting the signal they were being hit by laser but they were not able to jam the gun.