> Have you disconnected and insulated the 3-wire data bus > Can you make the instructions a wee bitty simpler Hi Andy, Turn to page 60 of your Citroen handbook to see a diagram of the Radio Connector layout and wiring. If you do not have this diagram, email me off list and I will send it to you. Cut and separately insulate the following wires to disable the standard radios connection to the display and vehicle multiplex. Connector A terminal 2 - Orange wire, A3 – Blue, A4 - Green. This will prevent your Sony unit interfering with the existing wiring. Three wires are now left in Connector Block A, A6 – Pink (+ via key), A7 - White (+ permanent), A8 - Green/Yellow (earth). You will now need to determine if the connector and wire positions are correct for your Sony unit. Connector Block B is fully used for the speaker wires only. The Remote Control can be pulled out by depressing a catch on the underside of the mounting. You will need to remove both steering column covers to do this. Steve