jd 328d aux hyd

hi its been quite awhile since I posted anything lol that's a good thing anyway I have a jd 328d with manual controls and im having some difficulty with the aux hyds. I have the 5 volts required in the joystick and the proportioning swith is working correctly on the 2 channels and I have the 12 volts required on the trigger (good ground to) all the way to the emu but nothing coming out of the emu. my question is... is the some kind of a multipler in the emu that variable 8 to 12 volts down...

jd 328d aux hyd

jd 328d aux hyd