CB antenna when Tourpak off
Our son and us each took our tourpaks off our 2008 Ultras and I mounted a trucker type cb antenna on a homemade bracket which is bolted on where the bottom saddle bag support is bolted to the bike's frame. I did the same for the AM/FM antenna. Had to add in a cable extender made from a 3 foot piece of rg-58 and connectors to reach the antenna. I also bought and mounted 2 switches to replace the select/up/down and ptt/audio up/audio down switches which were mounted in the tourpak speaker housings. (If you order the switches from H-D, be sure to get the 6 pin Deutsch connectors for the end of the wires and it is a plug and play set up.) Now my betterhalf can once again vary the volume in her headset and talk on the cb.
Good luck with your mods.