The a/c vent assembly is just one more part to get out of the way. Afterwards you can remove the ash tray, then its hanger. The signal flasher is on the right side of that tray hanger. Easy enough to seperate it. Dont forget to put it back. Disconnect the lighter and lamp if present. How much hardware to remove from the radio varries a little from one model to the next. Once the radio is seperated from the bezel and dash, it will move toward the firewall and down. Disconnect its electrical and antenna.