diff --git a/src/net/torvald/terrarum/ModMgr.kt b/src/net/torvald/terrarum/ModMgr.kt
index ecdbbbf25..292fcceda 100644
--- a/src/net/torvald/terrarum/ModMgr.kt
+++ b/src/net/torvald/terrarum/ModMgr.kt
@@ -566,6 +566,7 @@ object ModMgr {
 
             }
             Terrarum.wireCodex.portsFromModule(module, "wires/")
+            Terrarum.wireCodex.wireDecaysFromModule(module, "wires/")
         }
 
         private fun makeNewItemObj(tile: BlockProp, isWall: Boolean) = object : GameItem(
diff --git a/src/net/torvald/terrarum/blockproperties/WireCodex.kt b/src/net/torvald/terrarum/blockproperties/WireCodex.kt
index 2458c53e0..bfff155b0 100644
--- a/src/net/torvald/terrarum/blockproperties/WireCodex.kt
+++ b/src/net/torvald/terrarum/blockproperties/WireCodex.kt
@@ -23,6 +23,8 @@ class WireCodex {
 
     @Transient val wirePorts = HashMap<WireEmissionType, Triple<TextureRegionPack, Int, Int>>()
 
+    @Transient val wireDecays = HashMap<ItemID, Double>()
+
     fun clear() {
         wireProps.clear()
     }
@@ -123,6 +125,23 @@ class WireCodex {
         }
     }
 
+    fun wireDecaysFromModule(module: String, path: String) {
+        printdbg(this, "Building wire ports table for module $module")
+        try {
+            registerDecays(module, path, CSVFetcher.readFromModule(module, path + "decayconsts.csv"))
+        }
+        catch (e: IOException) { e.printStackTrace() }
+    }
+
+    private fun registerDecays(module: String, path: String, records: List<CSVRecord>) {
+        records.forEach {
+            val item = it.get("wireItemID")
+            val d = it.get("const").toDouble()
+
+            wireDecays[item] = d
+        }
+    }
+
     fun getAll() = wireProps.values
 
     /*fun get(index: Int): WireProp {
diff --git a/src/net/torvald/terrarum/gameactors/WireActor.kt b/src/net/torvald/terrarum/gameactors/WireActor.kt
index 8ba0efbbe..34ee51a31 100644
--- a/src/net/torvald/terrarum/gameactors/WireActor.kt
+++ b/src/net/torvald/terrarum/gameactors/WireActor.kt
@@ -10,6 +10,7 @@ import net.torvald.terrarum.gameitems.ItemID
 import net.torvald.terrarum.modulebasegame.TerrarumIngame
 import net.torvald.terrarum.modulebasegame.gameactors.WireEmissionType
 import net.torvald.terrarum.ui.Toolkit
+import kotlin.math.cos
 
 /**
  * Created by minjaesong on 2024-03-05.
@@ -63,11 +64,33 @@ class WireActor : ActorWithBody, NoSerialise, InternalActor {
     override fun updateImpl(delta: Float) {
     }
 
+    private fun essfun0(x: Double) = -cos(Math.PI * x) / 2.0 + 0.5
+    private fun essfun(x: Double) = essfun0(x)
+
     override fun drawBody(frameDelta: Float, batch: SpriteBatch) {
         if (isVisible && sprite != null) {
-            (sprite as SheetSpriteAnimation).currentRow = (world?.getWireEmitStateOf(worldX, worldY, wireID)?.isNotZero == true).toInt()
             BlendMode.resolve(drawMode, batch)
-            drawSpriteInGoodPosition(frameDelta, sprite!!, batch)
+
+            // signal wires?
+            if (WireCodex.wireProps[wireID]?.accepts == "digital_bit") {
+                val strength = world?.getWireEmitStateOf(worldX, worldY, wireID)?.x ?: 0.0
+
+                // draw base (unlit) sprite
+                batch.color = Color.WHITE
+                (sprite as SheetSpriteAnimation).currentRow = 0
+                drawSpriteInGoodPosition(frameDelta, sprite!!, batch, 0, Color.WHITE)
+
+                // draw lit sprite
+                val alpha = Color(1f, 1f, 1f, essfun(strength.coerceIn(0.0, 1.0)).toFloat())
+                (sprite as SheetSpriteAnimation).currentRow = 1
+                drawSpriteInGoodPosition(frameDelta, sprite!!, batch, 0, alpha)
+            }
+            else {
+                (sprite as SheetSpriteAnimation).currentRow = 0
+                drawSpriteInGoodPosition(frameDelta, sprite!!, batch, 0, Color.WHITE)
+            }
+
+
         }
     }
 }
diff --git a/src/net/torvald/terrarum/modulebasegame/WorldSimulator.kt b/src/net/torvald/terrarum/modulebasegame/WorldSimulator.kt
index 83f09f92a..bbd57ccda 100644
--- a/src/net/torvald/terrarum/modulebasegame/WorldSimulator.kt
+++ b/src/net/torvald/terrarum/modulebasegame/WorldSimulator.kt
@@ -520,7 +520,8 @@ object WorldSimulator {
     }
 
     private fun calculateDecay(signal: Vector2, dist: Int, wire: ItemID, signalType: WireEmissionType): Vector2 {
-        return signal * 0.995.pow(dist.toDouble())
+        val d = WireCodex.wireDecays[wire]!!
+        return signal * d.pow(dist.toDouble())
     }
 
     private fun traverseWireGraph(world: GameWorld, wire: ItemID, startingPoint: WireGraphCursor, signal: Vector2, signalType: WireEmissionType) {