I've done some research and viewed one or more videos on places like YouTube. I need to figure out where the antenna booster is at. I thought it would be in the trunk near the antenna but the semi-clear "box" that holds some circuitry is apparently NOT the booster. Someone suggested it is near the rear window but where is it hidden? What do I have to remove to locate it? Thank you!!

 

looks like the left C pillar on the pdf

 

Thank you for the pdf diagram.

Any idea whether the plastic trim is held in place by "snap in" plugs or are there screws holding it in ... or both?