diff --git a/firmware/config/boards/kinetis/config/controllers/algo/rusefi_generated.h b/firmware/config/boards/kinetis/config/controllers/algo/rusefi_generated.h
index 7f0980582f..b32f17f112 100644
--- a/firmware/config/boards/kinetis/config/controllers/algo/rusefi_generated.h
+++ b/firmware/config/boards/kinetis/config/controllers/algo/rusefi_generated.h
@@ -2268,6 +2268,8 @@
 #define ts_show_hip9011 true
 #define ts_show_joystick true
 #define ts_show_lcd true
+#define ts_show_main_relay true
+#define ts_show_main_relay_microRusEFI_message false
 #define ts_show_sd_card true
 #define ts_show_spi true
 #define ts_show_trigger_comparator true
diff --git a/firmware/config/boards/microrusefi/prepend.txt b/firmware/config/boards/microrusefi/prepend.txt
index 73e90b6153..63b69d2d28 100644
--- a/firmware/config/boards/microrusefi/prepend.txt
+++ b/firmware/config/boards/microrusefi/prepend.txt
@@ -11,3 +11,5 @@
 #define ts_show_sd_card true
 #define ts_show_can_pins false
 #define ts_show_tunerstudio_port false
+#define ts_show_main_relay false
+#define ts_show_main_relay_microRusEFI_message true
diff --git a/firmware/controllers/generated/rusefi_generated.h b/firmware/controllers/generated/rusefi_generated.h
index e7d5c4c437..1dcd73dd81 100644
--- a/firmware/controllers/generated/rusefi_generated.h
+++ b/firmware/controllers/generated/rusefi_generated.h
@@ -2268,6 +2268,8 @@
 #define ts_show_hip9011 true
 #define ts_show_joystick true
 #define ts_show_lcd true
+#define ts_show_main_relay true
+#define ts_show_main_relay_microRusEFI_message false
 #define ts_show_sd_card true
 #define ts_show_spi true
 #define ts_show_trigger_comparator false
diff --git a/firmware/integration/rusefi_config.txt b/firmware/integration/rusefi_config.txt
index 33eabd4287..fa57ffb213 100644
--- a/firmware/integration/rusefi_config.txt
+++ b/firmware/integration/rusefi_config.txt
@@ -1551,6 +1551,8 @@ end_struct
 
 ! some board files override this value using prepend file
 #define ts_show_hip9011 true
+#define ts_show_main_relay true
+#define ts_show_main_relay_microRusEFI_message false
 #define ts_show_cj125 true
 #define ts_show_etb true
 #define ts_show_etb_pins true
diff --git a/firmware/tunerstudio/rusefi.input b/firmware/tunerstudio/rusefi.input
index 01b64aca28..624c4f46dd 100644
--- a/firmware/tunerstudio/rusefi.input
+++ b/firmware/tunerstudio/rusefi.input
@@ -1249,7 +1249,7 @@ menuDialog = main
 		subMenu = std_separator
 		
 		# Digital outputs
-		subMenu = mainRelay,				"Main relay"
+		subMenu = mainRelayDialog,			"Main relay"
 		subMenu = starterRelay,				"Starter Disable relay"
 		subMenu = fuelPump,					"Fuel pump & rail"
 		subMenu = fanSetting,				"Fan"
@@ -2319,9 +2319,10 @@ cmd_set_engine_type_default					= "w\x00\x31\x00\x00"
 
 
 ;			Controller->Actuator Outputs
-	dialog = mainRelay, "Main relay output"
-		field = "Pin",  						mainRelayPin
-		field = "Pin mode",			         	mainRelayPinMode
+	dialog = mainRelayDialog, "Main relay output"
+		field = "microRusEFI main relay control is hard wired on pin #29"@@if_ts_show_main_relay_microRusEFI_message
+		field = "Pin",  						mainRelayPin@@if_ts_show_main_relay
+		field = "Pin mode",			         	mainRelayPinMode@@if_ts_show_main_relay
 
 	dialog = starterRelay, "Starter relay output"
 		field = "Pin",  					starterRelayDisablePin
diff --git a/firmware/tunerstudio/rusefi_microrusefi.ini b/firmware/tunerstudio/rusefi_microrusefi.ini
index 0dc594ca8f..22e223c243 100644
--- a/firmware/tunerstudio/rusefi_microrusefi.ini
+++ b/firmware/tunerstudio/rusefi_microrusefi.ini
@@ -89,7 +89,7 @@ enable2ndByteCanID = false
 
 ; see PAGE_0_SIZE in C source code    
 ; CONFIG_DEFINITION_START
-; this section was generated automatically by rusEfi tool ConfigDefinition.jar based on gen_config.bat integration\rusefi_config.txt Thu May 14 23:04:50 EDT 2020
+; this section was generated automatically by rusEfi tool ConfigDefinition.jar based on gen_config.bat integration\rusefi_config.txt Fri May 15 12:04:24 EDT 2020
 
 pageSize            = 20000
 page = 1
@@ -2509,7 +2509,7 @@ menuDialog = main
 		subMenu = std_separator
 		
 		# Digital outputs
-		subMenu = mainRelay,				"Main relay"
+		subMenu = mainRelayDialog,			"Main relay"
 		subMenu = starterRelay,				"Starter Disable relay"
 		subMenu = fuelPump,					"Fuel pump & rail"
 		subMenu = fanSetting,				"Fan"
@@ -3569,9 +3569,8 @@ cmd_set_engine_type_default					= "w\x00\x31\x00\x00"
 
 
 ;			Controller->Actuator Outputs
-	dialog = mainRelay, "Main relay output"
-		field = "Pin",  						mainRelayPin
-		field = "Pin mode",			         	mainRelayPinMode
+	dialog = mainRelayDialog, "Main relay output"
+		field = "microRusEFI main relay control is hard wired on pin #29"
 
 	dialog = starterRelay, "Starter relay output"
 		field = "Pin",  					starterRelayDisablePin