Do you have remotes? or are you referring to the quick connect mounted to the side of the lift box? If it is this connection, you must close (clockwise) the valve which has a hex head on it like a bold. then raise the lift handle to apply pressure, push the lift handle down to allow the return. you may have a return on the other side of the lift box and if you splitter has its own valve you should have no problem so long as you close the valve and raise the draft and position levers all the way up. If you have true remotes (controlled by thier own valve with its own lever) than you may have a Pressure relief problem.