We have a JD 1990 drill and use a 1800 monitor with it. On our older red tractors we have to use a greenstar harness to hook up the monitor to the tractor and drill. We will be using a mt765c challenger to pull the drill. It has the iso connector on the back. I was wondering if there is a way to plug the drill into that connector and plug the monitor into the tractor somewhere so I can get rid of the greenstar harness. We never permanently mounted the harness in case we had to use a different tractor and it would be nice to get rid of the huge pile of wires laying in the cab. We run trimble guidance and only use the 1800 for the drill monitor and only use like 2 wires in the whole harness. The drill is a GS2 system. Thanks.