Index: dialin/dg/voltages.py
===================================================================
diff -u -r3a70bfb451b74106348c064c34f19934aadd9119 -rb1ffba07a82b4e99156a07b09762d33205300050
--- dialin/dg/voltages.py	(.../voltages.py)	(revision 3a70bfb451b74106348c064c34f19934aadd9119)
+++ dialin/dg/voltages.py	(.../voltages.py)	(revision b1ffba07a82b4e99156a07b09762d33205300050)
@@ -42,9 +42,11 @@
     MONITORED_LINE_EXT_ADC_1_REF_V = 10   # External ADC 1 reference voltage (3V)
     MONITORED_LINE_EXT_ADC_2_REF_V = 11   # External ADC 2 reference voltage (3V)
     MONITORED_LINE_PS_GATE_DRIVER_V = 12  # P/S gate driver (5V)
-    MONITORED_LINE_24V_PRIM_HTR_V = 13    # Primary heater, secondary element voltage (0..24V)
-    MONITORED_LINE_24V_TRIM_HTR_V = 14    # Trimmer heater voltage (0..24V)
-    NUM_OF_MONITORED_LINES = 15           # Number of monitored voltages
+    MONITORED_LINE_24V_PRIM_HTR_V = 13    # Primary heater  (0..24V)
+    MONITORED_LINE_24V_PRIM_HTR_GND_V = 14  # Primary heater ground (0..24V)
+    MONITORED_LINE_24V_SEC_HTR_V = 15     # Secondary element voltage (0..24V)
+    MONITORED_LINE_24V_TRIM_HTR_V = 16    # Trimmer heater voltage (0..24V)
+    NUM_OF_MONITORED_LINES = 17           # Number of monitored voltages
 
 
 class DGVoltages(AbstractSubSystem):
@@ -116,8 +118,12 @@
             message['message'][MsgFieldPositions.START_POS_FIELD_13:MsgFieldPositions.END_POS_FIELD_13]))
         v24p = struct.unpack('f', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_14:MsgFieldPositions.END_POS_FIELD_14]))
-        v24t = struct.unpack('f', bytearray(
+        v24pg = struct.unpack('f', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_15:MsgFieldPositions.END_POS_FIELD_15]))
+        v24s = struct.unpack('f', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_16:MsgFieldPositions.END_POS_FIELD_16]))
+        v24t = struct.unpack('f', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_17:MsgFieldPositions.END_POS_FIELD_17]))
 
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_1V_FPGA.value] = v1[0]
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_1_2V_PROC.value] = v12[0]
@@ -133,6 +139,8 @@
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_PS_GATE_DRIVER_V.value] = v5g[0]
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_24V_MAIN.value] = v24[0]
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_24V_PRIM_HTR_V.value] = v24p[0]
+        self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_24V_PRIM_HTR_GND_V.value] = v24pg[0]
+        self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_24V_SEC_HTR_V.value] = v24s[0]
         self.monitored_voltages[DGMonitoredVoltages.MONITORED_LINE_24V_TRIM_HTR_V.value] = v24t[0]
 
     def cmd_monitored_voltage_override(self, signal: int = 0, volts: float = 0.0, reset: int = NO_RESET) -> int: