I sent these two pictures to the dealer service dept. where I bought the tractor.
This is what I was told, in my words.
"Disconnect the fitting to the left or towards rear (has red dot) from tractor hyd. block.
Connect that hose to the "P" (pressure) port on the aux. valve on fender.
Run a hose from "C" (power beyond) port on aux. valve to the port where hose was disconnected on tractor hyd. block.
Run hose from "T" (tank) port on aux. valve to a port into transmission/rear end housing on tractor."
He did not know where the "to tank" line would have to attach to the tractor. I'll find that tomorrow, maybe.
I don't have a problem with where or how to connect the four lines from the mower.