Ok I have been looking to fit a rear view camera to my Avensis T180 which has the B9010 navigation system. However it does not have the 4 pin connector normally for connecting the camera. So i did a bit of digging and found the Corrola and Auris accessory instalation manuals which show the 4 camera wires going to the 20 pin connector (normally steering wheel controls and rear audio control) see pic below. So it seems that the 4 pin connector has been integrated into the 20 pin connector, what i