Sub Install?
Unless you want to go with an aftermarket headunit like me just get a headunit, find a local audio shop that is trusted..., let them make a custom face for the screen and wire it up to your car
So far I did both but I love my aftermarket screen cause it sounds soo much better than any w204 with any rca pac
Using a High to Low signal converter, could tap the sub speaker wire then route to the new amp and on to the sub. Also would be helpful to have a gain control knob close to the drivers seat to turn up the base without touching the volume on the head unit.



