CR-V
1. Remove the instrument panel sections that obstruct access to the antenna cable (See Chapter 6).
2. Loosen the antenna mounting screws using a T-20 Torx screwdriver.
3. Installation is carried out in reverse order.
Odyssey
1. Unscrew the antenna mast.
2. Unscrew the antenna mounting nut (to do this, use a special key O7JAA-0010000C).
3. Loosen the screws securing the wing protective panel and remove the latches (to do this, remove the finger and remove the latch bushing) and remove the panel.
4. Unscrew the antenna housing mounting bolt and remove the antenna housing from the wheel arch.
5. Installation is carried out in reverse order. First tighten the antenna nut, then the antenna housing mounting bolt.
The article was taken from the website: HONDABOOK