Here is the CORRECT way to ground your antennas on these new trucks with the isolated mirror mounts and fiberglass bodies. If this isnt done correctly, (going straight to ground), the coaxial cable will radiate and not the antenna. I have personally spoken with a Wilson engineer and this is the way to do it. Dont listen to what the cb rambos or the cb hack shops tell you.
Wilson Antenna Tech support - Trucker SWR Notes
Scroll towards the bottom of the page.
Be sure to remove the paint from where the wire will touch around the bolt and bolt head. You are trying to add the sheet metal of the door as part of the ground plane for the antenna.
Also notice what they say about tilting your antennas forward. All it does is screw up your radiation angle and make you look like a retard to those that know better...