diff --git a/configurations/bletchley_baseboard.json b/configurations/bletchley_baseboard.json
index 4e43ea6..bdca582 100644
--- a/configurations/bletchley_baseboard.json
+++ b/configurations/bletchley_baseboard.json
@@ -432,6 +432,7 @@
             "LED": "fan0_fault",
             "Name": "System Fan Connector 0",
             "Pwm": 0,
+            "PwmName": "FAN0_PWM",
             "Status": "disabled",
             "Tachs": [
                 0,
@@ -443,6 +444,7 @@
             "LED": "fan1_fault",
             "Name": "System Fan Connector 1",
             "Pwm": 1,
+            "PwmName": "FAN1_PWM",
             "Status": "disabled",
             "Tachs": [
                 2,
@@ -454,6 +456,7 @@
             "LED": "fan2_fault",
             "Name": "System Fan Connector 2",
             "Pwm": 2,
+            "PwmName": "FAN2_PWM",
             "Status": "disabled",
             "Tachs": [
                 4,
@@ -465,6 +468,7 @@
             "LED": "fan3_fault",
             "Name": "System Fan Connector 3",
             "Pwm": 3,
+            "PwmName": "FAN3_PWM",
             "Status": "disabled",
             "Tachs": [
                 6,
diff --git a/configurations/bletchley_chassis.json b/configurations/bletchley_chassis.json
index 253b032..d5eb88d 100644
--- a/configurations/bletchley_chassis.json
+++ b/configurations/bletchley_chassis.json
@@ -190,14 +190,14 @@
             "OutLimitMax": 100.0,
             "OutLimitMin": 0.0,
             "Outputs": [
-                "Pwm 1",
-                "Pwm 1",
-                "Pwm 2",
-                "Pwm 2",
-                "Pwm 3",
-                "Pwm 3",
-                "Pwm 4",
-                "Pwm 4"
+                "FAN0_PWM",
+                "FAN0_PWM",
+                "FAN1_PWM",
+                "FAN1_PWM",
+                "FAN2_PWM",
+                "FAN2_PWM",
+                "FAN3_PWM",
+                "FAN3_PWM"
             ],
             "PCoefficient": 0.0,
             "PositiveHysteresis": 0.0,