Thanks for reaching out and welcome to the Bose Community Forums.
It is great to hear that you are interested in a SoundTouch Wireless Link Adapter. This should work with your Wave III, when plugged into the AUX port on the back of the speaker.
Have you already purchased the adapter? If so can I assist you with the set up at all?
I look forward to your response.
Vicky W - Community Support
Feel more. Do more. Be more. New to the community? Check out the Getting Started board. Help others find answers to your questions by clicking on 'Accept as Solution' at the bottom of a reply. If you see a post you like, make sure to give it a thumbs up!