So I just got back from my truck trying the different ideas everyone had. The way you have your is slick! Up were you have it is perfect, easy to see and use without taking it down every time.
I can run the cable along the right side of the CB and down the center post. The center post gasket is split in the middle with enough room behind the gasket to hide the cable. Then run it across the dashboard, and down the side to the plug.
Should I ever have to hand the unit to an officer the cable will come right out of the center post gaskets.
Thanks again, I never would have thought to put it in that location.