Hi thank you for responding to my question. I have tried the connections suggested but it still will not operate. The only thing I can find in the instructions is a statement Operation of some of the functions of this unit are very complex. Because of this, it was deemed necessary to place these functions into a special screen. This will restrict operation of these functions to times when the vehicle is parked. This ensures the focus of the drivers attention will be on the road and not on the screen. This has been done for the safety of the driver and passengers. The set-up operation cannot be made if the vehicle is moving. The car must be parked and the handbrake engaged for the procedure described in the owners manual to be valid. The warning "Operation is not allowed while driving" will be displayed if any attempts are made to perform this operation while driving. I did try telephoning Alpine but never got through. The technical department was always busy. I therefore emailed Alpine for an answer as this unit is sold as a plug and play system. No response yet