--- ../src-base/minecraft/net/minecraft/block/BlockRedstoneLight.java
+++ ../src-work/minecraft/net/minecraft/block/BlockRedstoneLight.java
@@ -9,6 +9,8 @@
 import net.minecraft.item.ItemStack;
 import net.minecraft.world.World;
 
+import org.bukkit.craftbukkit.event.CraftEventFactory; // CraftBukkit
+
 public class BlockRedstoneLight extends Block
 {
     private final boolean field_150171_a;
@@ -35,6 +37,13 @@
             }
             else if (!this.field_150171_a && p_149726_1_.isBlockIndirectlyGettingPowered(p_149726_2_, p_149726_3_, p_149726_4_))
             {
+                // CraftBukkit start
+                if (CraftEventFactory.callRedstoneChange(p_149726_1_, p_149726_2_, p_149726_3_, p_149726_4_, 0, 15).getNewCurrent() != 15)
+                {
+                    return;
+                }
+
+                // CraftBukkit end
                 p_149726_1_.setBlock(p_149726_2_, p_149726_3_, p_149726_4_, Blocks.lit_redstone_lamp, 0, 2);
             }
         }
@@ -50,6 +59,13 @@
             }
             else if (!this.field_150171_a && p_149695_1_.isBlockIndirectlyGettingPowered(p_149695_2_, p_149695_3_, p_149695_4_))
             {
+                // CraftBukkit start
+                if (CraftEventFactory.callRedstoneChange(p_149695_1_, p_149695_2_, p_149695_3_, p_149695_4_, 0, 15).getNewCurrent() != 15)
+                {
+                    return;
+                }
+
+                // CraftBukkit end
                 p_149695_1_.setBlock(p_149695_2_, p_149695_3_, p_149695_4_, Blocks.lit_redstone_lamp, 0, 2);
             }
         }
@@ -59,6 +75,13 @@
     {
         if (!p_149674_1_.isRemote && this.field_150171_a && !p_149674_1_.isBlockIndirectlyGettingPowered(p_149674_2_, p_149674_3_, p_149674_4_))
         {
+            // CraftBukkit start
+            if (CraftEventFactory.callRedstoneChange(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_, 15, 0).getNewCurrent() != 0)
+            {
+                return;
+            }
+
+            // CraftBukkit end
             p_149674_1_.setBlock(p_149674_2_, p_149674_3_, p_149674_4_, Blocks.redstone_lamp, 0, 2);
         }
     }
