--- a/net/minecraft/world/level/block/BlockRedstoneWire.java
+++ b/net/minecraft/world/level/block/BlockRedstoneWire.java
@@ -38,6 +38,8 @@
 import net.minecraft.world.phys.shapes.VoxelShapeCollision;
 import net.minecraft.world.phys.shapes.VoxelShapes;
 
+import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+
 public class BlockRedstoneWire extends Block {
 
     public static final BlockStateEnum<BlockPropertyRedstoneSide> NORTH = BlockProperties.NORTH_REDSTONE;
@@ -55,7 +57,7 @@
     private static final Map<EnumDirection, VoxelShape> SHAPES_FLOOR = Maps.newEnumMap(ImmutableMap.of(EnumDirection.NORTH, Block.a(3.0D, 0.0D, 0.0D, 13.0D, 1.0D, 13.0D), EnumDirection.SOUTH, Block.a(3.0D, 0.0D, 3.0D, 13.0D, 1.0D, 16.0D), EnumDirection.EAST, Block.a(3.0D, 0.0D, 3.0D, 16.0D, 1.0D, 13.0D), EnumDirection.WEST, Block.a(0.0D, 0.0D, 3.0D, 13.0D, 1.0D, 13.0D)));
     private static final Map<EnumDirection, VoxelShape> SHAPES_UP = Maps.newEnumMap(ImmutableMap.of(EnumDirection.NORTH, VoxelShapes.a((VoxelShape) BlockRedstoneWire.SHAPES_FLOOR.get(EnumDirection.NORTH), Block.a(3.0D, 0.0D, 0.0D, 13.0D, 16.0D, 1.0D)), EnumDirection.SOUTH, VoxelShapes.a((VoxelShape) BlockRedstoneWire.SHAPES_FLOOR.get(EnumDirection.SOUTH), Block.a(3.0D, 0.0D, 15.0D, 13.0D, 16.0D, 16.0D)), EnumDirection.EAST, VoxelShapes.a((VoxelShape) BlockRedstoneWire.SHAPES_FLOOR.get(EnumDirection.EAST), Block.a(15.0D, 0.0D, 3.0D, 16.0D, 16.0D, 13.0D)), EnumDirection.WEST, VoxelShapes.a((VoxelShape) BlockRedstoneWire.SHAPES_FLOOR.get(EnumDirection.WEST), Block.a(0.0D, 0.0D, 3.0D, 1.0D, 16.0D, 13.0D))));
     private static final Map<IBlockData, VoxelShape> SHAPES_CACHE = Maps.newHashMap();
-    private static final Vec3D[] COLORS = (Vec3D[]) SystemUtils.a((Object) (new Vec3D[16]), (avec3d) -> {
+    private static final Vec3D[] COLORS = (Vec3D[]) SystemUtils.a((new Vec3D[16]), (avec3d) -> { // CraftBukkit - decompile error
         for (int i = 0; i <= 15; ++i) {
             float f = (float) i / 15.0F;
             float f1 = f * 0.6F + (f > 0.0F ? 0.4F : 0.3F);
@@ -258,7 +260,16 @@
     private void a(World world, BlockPosition blockposition, IBlockData iblockdata) {
         int i = this.a(world, blockposition);
 
-        if ((Integer) iblockdata.get(BlockRedstoneWire.POWER) != i) {
+        // CraftBukkit start
+        int oldPower = (Integer) iblockdata.get(BlockRedstoneWire.POWER);
+        if (oldPower != i) {
+            BlockRedstoneEvent event = new BlockRedstoneEvent(world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), oldPower, i);
+            world.getCraftServer().getPluginManager().callEvent(event);
+
+            i = event.getNewCurrent();
+        }
+        if (oldPower != i) {
+            // CraftBukkit end
             if (world.getType(blockposition) == iblockdata) {
                 world.setTypeAndData(blockposition, (IBlockData) iblockdata.set(BlockRedstoneWire.POWER, i), 2);
             }
