Hydraulic where done at dealer.If you went check with Agritex(John Deere dealer)in Drummondville,Qc.(819)474-0002 ask for Dann / For what you see on the photos=power beyond for the backoe;2 elec. selector valve that work with loader joystick if want that you need route hose from joystick hyd. body to elec. selector that are monted on the back frame and from there to hyd.couple on the side ;for the coupler on the lower right side are just used as a hose tie up for the 3rd hyd. function on the loader for them to work just to couple them to right upper coupler. Have fun the snow