I'm sorry I have no idea what all JD pieces can be used by the Trimble/AgLeader autopilot systems. I'd hope a good Trimble dealer/distributor would chime in.

I do know that Trimble can/does use the JD steering valve, both on the tractor & the combine thus far. Maybe sprayers too...don't know that.

Our installations were all done by our Trimble/Ag Leader dealer. Trimble folks themselves (one from Switzerland) came out & did combine install & setup. They wanted to make sure they could use JD valve. It works fine.