installation of hydraulic landing gear on fifth wheel

Has anyone seen or have a manual for changing over electric landing gear to hydraulic landing gear. Lippert sells hydraulic legs that will fit into the same location as the electric landing gear legs. I have a price and picture of the legs but I can't seem to find a manual on how to install. For me to take the unit to Indiana from eastern Canada would be costly.
I would appreciate some help on this, I'm having issue's with the electric legs and want to change over if I can.
Thanks in advance,
Wayne