The SWI-JACK is a steering wheel control interface so the factory steering wheel controls can be used with the aftermarket headunit (JACK stands for JVC Alpine Clarion Kenwood : the compatible units for this model).hey what was that swi jack thing, and what wire did you run straight into the fuse panel?
I grounded the parking brake wire from the head unit, so I didn`t actually tie into the parking brake circuit at all, because this is the bypass method. So the head unit is fully functional without being parked (also illegal). I don`t recall that I did anything with the mute wire because I don`t have any bluetooth connections so I don`t think I needed it hooked up. I will be installing the BT200 bluetooth unit in the coming weeks, so hopefully that won`t be required with that, I guess I will soon find out.