So the stock audio controls on the left doesn't work as I have an aftermarket head unit. I got the car this way so I don't know how it was installed. How can I wire it so that it works again? Also I find it distracting to scroll through my presets from the head unit as they are small buttons. Anyways, is it possible to wire the steering wheel cruise control buttons to scroll through my preset stations??

 

you need a modifry dci

 

that won't make cruise control buttons control your radio, but it will restore the functionality of your buttons on the left