Originally Posted by lemmegetatthat
its very possible, many people have done it, there are ready made harnesses for the controls. I know its possible, but I never took the time to figure it out. check the audio section.
Also, this guy from LI got his system done in SI
Yup call up james at xclusv and tell him mike with the orange e90 sent you. They were able to run a extra harness to the back of my car so that I can plug in my old head unit if I ever need to plug it in for coding. I have full steering wheel controls, didn't loose my seat belt chime and no problems with taking the head unit out