Rob, theres nothing in your box behind the passenger seat is there? Also there is a false floor in there with almost like a coin tray under it - just make sure theres nothing there or under that tray either (lifts up very easily by putting a key or small screwdriver under it). This is where the main control unit for the bluetooth hides - there may be something kicking about in there.
Keep your fingers crossed, iirc, lomoto brought out a Snap On screwdriver from either there or the engine bay!!