My 2005 4/4 had the socket in the glovebox but not connected! Easily solved, cable was under the dash (purple/brown I think). Satnav suction mount fits on the windscreen as normal. Alternatively you can put the satnav on the gearbox tunnel, as the signal is perfectly good there. For many journeys you don't need to connect the satnav to power, most should last 3hrs+ on battery.
