Some progress

src/main/java/net/brokenmoon/redcontrol/blockentities/MonitorEntity.java

@@ -1,11 +1,12 @@
 package net.brokenmoon.redcontrol.blockentities;
 
 import net.brokenmoon.redcontrol.RedControl;
+import net.brokenmoon.redcontrol.api.IRedBusConnectable;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.util.math.BlockPos;
 
-public class MonitorEntity extends BlockEntity {
+public class MonitorEntity extends BlockEntity implements IRedBusConnectable {
     public MonitorEntity(BlockPos pos, BlockState state) {
         super(RedControl.MONITOR_BLOCK_ENTITY, pos, state);
     }