diff --git a/launch/data_simulators.launch.xml b/launch/data_simulators.launch.xml
index a513d70..f9e0e93 100644
--- a/launch/data_simulators.launch.xml
+++ b/launch/data_simulators.launch.xml
@@ -14,9 +14,12 @@
     <param name="diag_level" value="OK"/>
     <param name="node_name"  value="node_1"/>
   </node>
+  <node pkg="data_simulator" exec="diagnostic_publisher" name="diagnostic_2">
+    <param name="diag_level" value="WARN"/>
+    <param name="node_name"  value="node_2"/>
+  </node>
 
   <!-- Aggregator -->
-  <node pkg="diagnostic_aggregator" exec="aggregator_node">
-    <param from="$(find-pkg-share am_i_up)/params/diag_agg.yaml"/>
-  </node>
+  <node pkg="j7s_diagnostics_ros" exec="j7s_diagnostic_node"/>
+
 </launch>