diff --git a/connectors/custom_firmware.yaml b/connectors/custom_firmware.yaml
index a835764..7c9b999 100644
--- a/connectors/custom_firmware.yaml
+++ b/connectors/custom_firmware.yaml
@@ -17,6 +17,7 @@ pins:
     class: analog_inputs
     ts_name: CLT (A2)
 
+    
   - id: EFI_ADC_11
     class: analog_inputs
     ts_name: BattV  (C1)
@@ -186,6 +187,10 @@ pins:
     class: [outputs, switch_inputs, event_inputs]
     ts_name: Extra I/O PE14
 
+  - id: A3
+    class: switch_inputs
+    ts_name: Knock (A3)
+
   - id: [E15, E15, E15]
     class: [outputs, switch_inputs, event_inputs]
     ts_name: Idle (PE15)