Auxillary Hydraulics for B7800

[RIstrand]

My son has a Kubota B7800 with a LA402 loader I would like to add an additional open center hydraulic valve. I am thinking that this should go in series with the loader valve but it is not clear if we should install it before or after. The advice of this august group would be appreciated Roger

 

[Ductape]

Aux. valves are added after the loader valve in series.