Yes,  I connected the orange and orange w/white tracer from the 440 harness to the wires in the CR7 harness.  I have a remote toggle switch on the screen and if I touch it, the screen will paint the full width in green, like you mention.  I have a connector in the large port on the CR7 that is for my autosteer.  I did install a serial port from the 440 to port B of a harness.  Maybe I now need to disconnect the two orange wires?  Thanks.