So I just acquired a 2004 Altima S with right side steering wheel switches only. My wifes and daughters Altimas both have the radio and MPG, outside temp readings, etc. on the left side. I'd like them too! In my experience, car manufacturers these days don't like to make many versions of wiring harnesses etc. My hope is that since the steering wheel has a lot of unused pins in the connector, if I were to add a left side control to the air bag, maybe an outside ambient temp sensor behind the bumper....what else would it take to have the features that the others have? A body control computer? Any words of wisdom?