1999 western star plow truck help

I picked up a ex road maintenance plow truck with weldco beales mounts and hydraulics.I have mounted a front plow on it and the up /down works fine and the angle right works fine but nothing on the angle left not even the sound of the pump loading up.There is controls for under body plow and some other hydraulic things none of which are mounted but if I press the control I can hear the pump which is mounted in front directly to the crank.I swapped out the rocker switch for angle left with known good one nothing changed.I swapped out the magnetic coil on the valve body for the angle left with a known good one nothing changed.Does the pump have a electric clutch that engages when a function is pressed or is the pump audible because when pressing a function it opens a valve allowing hydraulic to the pump.Excuse me for being long winded tried to be as condensed as possible with my failed troubleshoot.Can anyone give me a bit of a plow problem education?

1999 western star plow truck help