I hate magnetic antennas and, of course, that is exactly what the Alpine nav unit came with. So, I ordered a Motorola PMAN4000 permanent mount active GPS antenna.
My original intention was to mount it dead center at the front of the cab. However, the motor for the moonroof is there. It hangs down too low to mount with the other antennas (would be in the path of the glass) so I decided to mount it
way off center. This antenna requires a 1" hole
Not being entirely trusting of adhesive pads, I also put RTV on the inside of this hole (the other antennas all have rubber gaskets).
The coaxial cable is run inside of the driver's side A-pillar. These come apart like this by the way:
Gently pry on the back until it begins to slide out then you can release the front. Two 10mm bolts and the whole thing pulls free with ease:
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