Help with part number.

part, number, switch, people, stereo, sells, toyota, costs, check, listening, sw20, swich, anntenna, system, sound, cars, premium, antenna, decide, found

I need the part number for the anntenna swich found on some cars with the premium sound system (sw20) The switch can let you decide if you want to have the antenna up when listening to a cd on your car stereo. I know several people on the web sells these, but i want the part number so i can check what a new switch costs originally from toyota.