Bobhaas, I am in the process of the same thing on my 4510. My plan is to tap in with a power beyond sleeve on the main control valve (just like the oem aux hydraulics) run to a flow control valve, then to a 12v 3 way closed center directional control valve. I want to hook up to a truck plow and be able to swing it. I will control this with a dirt bike kill switch on each T bar. I really wanted the oem valve with foot pedals, but $800 was too much. I got the valves for $200, haven't got hoses yet. My only issue is I am not positive that closed center is what I need. If it is supposed to be open center then all my flow will dead head when I let go of the button. I am looking to find out if the oem aux valve is open or closed center. Let me know if you see a flaw in my plan. I think your setup will work, you might want to add a needle valve for controlling flow, just have it in the cab. Chris