There is no access to the antenna coax by removing the glovebox in the 2K+ Bonneville. After descending from the headliner at the passenger side 'A' post, it runs across the top of the dash (underneath the dash pad) to the mid-point of the vehicle where it again descends to the back of the radio bay. These cars have two antennas, both which are part of the front and rear glass. From the single in-line connection in the dash, the coax runs to the antenna module located above the headliner in front of the rear window. These radios use the Dock-N-Lock system. Because of this, there is also no easy way to access the back of the radio for this type of connection.
StingRay Bike w/cards in the spokes, Weeeeeee!