I've just removed this from the car after the screen broke on the headunit
This allows Sony headunits to access your ipod via the CD changer socket on the rear of the unit. No need to break into the car's wiring, powered from the headunit. 3 cables to fit - one from the interface to the CD changer socket, a pair of phonos and the ipod lead. There is a suitable hole under the heater controls on most Elises to pass the ipod connector lead through. Will take 2 mins to fit after the headunit comes out.
£15 - will be going on ebay in a few days but would rather it went to a good home. If you live local I can help you fit it.
More details here - http://www.connects2.com/c2search.aspx?catID=35
Cheers
Andy