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Message: <blockquote data-quote="TriHonu" data-source="post: 38974" data-attributes="member: 897">The plow we converted had single acting cylinders and was set up with spring assist return.  The owner did not have the pump or controls.We could not find a 12v solenoid valve that would work with a pair of single acting cylinders for the money the owner wanted to spend on the project.  It was cheaper to buy a new selector valve and two surplus double acting cylinders. We have a surplus hydraulics store in our area.  My brother took one of the single acting cylinders off the plow and found a couple of  double acting replacements.  We had to trim the plow a small amount to get the replacement cylinders to fit the plow.  Make sure you look at the way your cylinder mounts and where the ports are located on the cylinder.  You need to insure the hoses can be attached and will not be crushed as you operate the cylinders.We ordered the selector valve and fittings from Surplus Center.  The valve uses O-ring Boss (ORB) fittings.  So we ordered ORB to National Pipe Thread (NPT) adapters so we could use off the shelf hydraulic hoses from the fleet and farm store.We made a simple switch box with a magnet on the back.  The box plugs into the cab and the operator can stick it where they want it.  The solenoids only draw a couple amps.</blockquote>