Hi guys,
Just found this link while I was looking up some stuff on Google.
Car Audio Direct - CTSFA004 CAN-Bus steering control adaptor - Steering Control Adaptor Quote from the site: Car Audio Direct for car stereo, navigation and audiovisual electronics. "Connects 2 CAN-Bus interface leads make it possible to update your existing factory head unit to a new model whilst still retaining use of your stalk/steering wheel audio controls."
Could be useful for anyone with a Linea / Punto who wants to upgrade the HU.