I would ask this in the audio section but it seems to be dead over there and not visited much.

I am planning a complete audio overhaul in the next two months or so. I am changing the head unit out for a dual din unit and was hoping to retain the steering wheels controls if possible. Crutchfield makes two units The Axxess or the PAC.

With these two in mind, does anyone know what kind of connector the steering wheel controls use or if they are integrated into the harness? Generally its a seperate adapter on the cars I have done but not sure if this is the case now.