Have an unopened bnib steering wheel interface by Axxess. You can visit their website for compatibility but it advertises as compatible with most cars. Just changed my mind on this and don't need it. Here is CL posting, if interested, best to contact me through CL but mention that you saw it here and ask for the Revscene price ;>. Surprise how expensive these things are. There is a used one on CL asking for $100!
Axxess Steering Wheel Control Interface ASWC-1 BNIB