I am looking for someone to show me how to make and code a steering wheel converter. I am installing an old analog Chevrolet Cruise Control in a 2006 Mazda that has resistance ladder steering wheel controls. The GM inputs need to be 12 volt old school on/off switch. I have very limited experience with Arduino but I know it has been done. I just get confused looking at all of the examples and almost all are converting for use with a radio which has different input requirements.
I have all factory wiring diagrams available to show what I'm trying to do.