diff --git a/OpenRA.Mods.Cnc/Activities/HarvesterDockSequence.cs b/OpenRA.Mods.Cnc/Activities/HarvesterDockSequence.cs
index 2be7776aff..e861777370 100644
--- a/OpenRA.Mods.Cnc/Activities/HarvesterDockSequence.cs
+++ b/OpenRA.Mods.Cnc/Activities/HarvesterDockSequence.cs
@@ -34,6 +34,7 @@ namespace OpenRA.Mods.Cnc
 		
 		readonly Actor proc;
 		readonly Harvester harv;
+		readonly HarvesterDocking dock;
 		readonly RenderBuilding rb;
 		State state;
 		
@@ -44,6 +45,7 @@ namespace OpenRA.Mods.Cnc
 			this.proc = proc;
 			state = State.Turn;
 			harv = self.Trait<Harvester>();
+			dock = self.Trait<HarvesterDocking>();
 			rb = proc.Trait<RenderBuilding>();
 			startDock = self.Trait<IHasLocation>().PxPosition;
 			endDock = proc.Trait<IHasLocation>().PxPosition + new int2(-15,8);
@@ -62,7 +64,7 @@ namespace OpenRA.Mods.Cnc
 					state = State.Dock;
 					return Util.SequenceActivities(new Drag(startDock, endDock, 12), this);
 				case State.Dock:
-					harv.Visible = false;
+					dock.Visible = false;
 					rb.PlayCustomAnimThen(proc, "dock-start", () => {rb.PlayCustomAnimRepeating(proc, "dock-loop"); state = State.Loop;});
 					state = State.Wait;
 					return this;
@@ -71,7 +73,7 @@ namespace OpenRA.Mods.Cnc
 						state = State.Undock;
 					return this;
 				case State.Undock:
-					rb.PlayCustomAnimThen(proc, "dock-end", () => {harv.Visible = true; state = State.Dragout;});
+					rb.PlayCustomAnimThen(proc, "dock-end", () => {dock.Visible = true; state = State.Dragout;});
 					state = State.Wait;
 					return this;
 				case State.Dragout:
diff --git a/OpenRA.Mods.Cnc/TiberiumRefinery.cs b/OpenRA.Mods.Cnc/TiberiumRefinery.cs
index 615430abf5..5401d15dc5 100644
--- a/OpenRA.Mods.Cnc/TiberiumRefinery.cs
+++ b/OpenRA.Mods.Cnc/TiberiumRefinery.cs
@@ -15,14 +15,16 @@ using OpenRA.Mods.RA.Render;
 using OpenRA.Traits;
 using OpenRA.Traits.Activities;
 using OpenRA.Mods.RA.Move;
+using System.Collections.Generic;
 
 namespace OpenRA.Mods.Cnc
 {
-	class TiberiumRefineryInfo : OreRefineryInfo
+	public class TiberiumRefineryInfo : OreRefineryInfo
 	{
 		public override object Create(ActorInitializer init) { return new TiberiumRefinery(init.self, this); }
 	}
-	class TiberiumRefinery : OreRefinery
+
+	public class TiberiumRefinery : OreRefinery
 	{
 		public TiberiumRefinery(Actor self, TiberiumRefineryInfo info)
 			: base(self, info as OreRefineryInfo) {}
@@ -32,4 +34,16 @@ namespace OpenRA.Mods.Cnc
 			return new HarvesterDockSequence(harv, self);
 		}
 	}
+
+	public class HarvesterDockingInfo : TraitInfo<HarvesterDocking> { }
+	public class HarvesterDocking : IRenderModifier
+	{
+		[Sync]
+		public bool Visible = true;
+
+		public IEnumerable<Renderable> ModifyRender(Actor self, IEnumerable<Renderable> r)
+		{
+			return Visible ? r : new Renderable[] { };
+		}
+	}
 }
diff --git a/OpenRA.Mods.RA/Harvester.cs b/OpenRA.Mods.RA/Harvester.cs
index 3d97efea75..e444ca1baa 100644
--- a/OpenRA.Mods.RA/Harvester.cs
+++ b/OpenRA.Mods.RA/Harvester.cs
@@ -30,14 +30,10 @@ namespace OpenRA.Mods.RA
 	}
 
 	public class Harvester : IIssueOrder, IResolveOrder, IPips, 
-		IRenderModifier, IExplodeModifier, IOrderVoice,
-		ISpeedModifier, ISync
+		IExplodeModifier, IOrderVoice, ISpeedModifier, ISync
 	{
 		Dictionary<ResourceTypeInfo, int> contents = new Dictionary<ResourceTypeInfo, int>();
-		
-		[Sync]
-		public bool Visible = true;
-		
+
 		[Sync]
 		public Actor LinkedProc = null;
 		
@@ -210,11 +206,6 @@ namespace OpenRA.Mods.RA
 			for (int i = 0; i < numPips; i++)
 				yield return GetPipAt(i);
 		}
-				
-		public IEnumerable<Renderable> ModifyRender(Actor self, IEnumerable<Renderable> r)
-		{
-			return Visible ? r : new Renderable[] { };
-		}
 
 		public bool ShouldExplode(Actor self) { return !IsEmpty; }
 
diff --git a/mods/cnc/rules/vehicles.yaml b/mods/cnc/rules/vehicles.yaml
index 27f396bd25..05e90e7eb8 100644
--- a/mods/cnc/rules/vehicles.yaml
+++ b/mods/cnc/rules/vehicles.yaml
@@ -50,6 +50,7 @@ HARV:
 		Resources: Tiberium, Blue Tiberium
 		PipCount: 5
 		Capacity: 28
+	HarvesterDocking:
 	Mobile:
 		Speed: 6
 	Health: