I'm trying to instal my after market xm radio into my XL factory radio. I'm having trouble deciding on best entry point and where to instal the satellite antenna. Shot in the dark here, has anyone done this before, and if so is there a good entry point from the outside of the truck to the inside?

 

I run coax for my CB next to the steering column. Large rubber grommet with wires going through it. There is a place on top I think where you can poke a hole through and run a wire

 

Also for anyone looking at after market radios, here is the antenna connection. Not the standard larger antenna connection.