My '01 S500 doesn't have the Startac phone installed. Can I change the connector to replace the phone?

 

All MBs are wired but you need an antenna splitter, a PSE, and a couple of other items. The Star Tac was analog which is no longer supported, you wont like the pricing to get current. If the car was set up with the phone the PSE still has to be replaced along with the cradle
http://www.wireless4mb.com/