Back Actor hydraulic connection

[pycoed]

I just bought a UTB ( Long) 445 DT (4 WD) which has a FEL with spool controls in the cab, plus a single rear hydraulic Q/D outlet. I want to run a back actor on this which has two hydraulic pipes marked in & out. Assuming the "in" pipe is connected to the rear outlet, where should I connect the "out" pipe from the back actor controls?

Cheers
John L