Hello,
I am starting get AOG autosteer operating on my JD 7720. I have been using AOG for a year now as lightbar guidance only. I am now ready to install the autosteer on the tractor. I have assemble the pcbv2 and have a Cytron MD13s motor controller. My tractor is NOT gps ready and does not have any factory installed auto steer equipment.
I am considering the jump straight to Hyd steer instead of installing the electric motor in the cab. My question is if I purchase a JD valve to go directly on the steering orbital, will I be able to use it? 
JD part # RE333004
Which .ino do I need to use?
I am confused by all the different valve and controls referenced to in the many other threads I have read thru. Any guidance would be greatly appreciated.
Neil