I do not think there is anything extraordinary about the cable . Make sure the Software Version in the Bogballe box is compatible with the teejet . A trimble man connected mine for section control and it took him three days to work out that the software in my Box was not compatible . It was not a big job to upgrade the box to a compatible Version .
I believe it is possible for me to take the Teejet Screen out of the Class and using a cheap aerial and cables to run the Bogballe headland and section control off it . Its not really a runner as the Steering is needed on the other tractor at the same time .