You will need a rowsense activation.  I'm not sure if a 600 series is wired. There is 2- 3 pin flat weatherpack plugs.  We have a 680 with a Drago head. 4 wires from the single point. 1 ground and 1 power that Y's to both plugs and 1 signal from each sensor. I think I have the pin out schematic. First had it on a 9770. Dealer gave us a head and activation to try. I though it was a waste as good corn would take a 12 row head where it wanted. Ran it 3 hrs. and I was sold. We have a 16-30 Drago on a 36 row planter. Nice for opening new land. Get close in head land and leave room to get on AB. 1st click to engage auto steer and get on pass. 2nd click engages rowsense and it takes over. I IRC 1200 for the sensors and we made our own harness. Needed 4 duetsch connectors