Guys I am a bit dissappiont to tell you that if there is anything in front of a LED jammer head. Even if it's mesh grill renders it useless.
Here is how i found out. I got my blinder's installed at a authentic Blinder retail and the he mounted them behind the mesh grill. I asked him why and if he read the instructions his response was this sort of thing is not in the blinder and escort trainning session he had to take to be a registered dealer. Blinder and Escort had taught him that the higher the jammer heads the better. It truly was also my fault for not make sure he knew where i wanted him to mount the heads. I just figured he would know because he is a Blinder dealer
Anyway the guy was extremely nice and said he would move the heads for free when ever i wanted and he will thrown in free labor for another jammer install in the rear of the car 8).
Well I went to test out my set-up easily picked off my car at 900 ft just by aming at the plate :cry:
One good thing is I am not driving that much this summer so I should be fine. After I get paid for the summer I would Like to have a Blinder M40 up front(all mounted in the underside of the bumper) as well as a dual Diode system. Then I'll next invest in a rear technology later