Very interested as I am looking for the same solution and very much appreciate your instructions. I have just purchased the C3 Picasso exclusive 2015 Reg and would like to to do the same Mod with satnav. I have watched the video and and feel confident to do this, however could you please let me know how the unit is connected to the power supply in order to switch on and off with ignition. Immediately after new year I shall be contacting our citroen agents regards the parts. Hoping you can help, Best regards Brian (Jake8090) :)