It should look a lot like this:
http://www.princehyd.com/Portals/0/products/valves/LvtInstS.pdf
Judging from the Surplus Center pic, it's all set up for power beyond, just plumb the power beyond, inlet, and tank ports.
Run the working port hoses to a plate with bulkhead fittings that tighten to holes in the plate, and attach your quick connects to the other side of the bulkhead fittings.
Wow, bulkhead fittings are hard to find. Here are some. Stay away from brass as they are only rated for 1200psi.
Discount Hydraulic Hose.com