diff --git a/selfdrive/ui/sunnypilot/ui_state.py b/selfdrive/ui/sunnypilot/ui_state.py
index 21ed78b096..79ca410e1b 100644
--- a/selfdrive/ui/sunnypilot/ui_state.py
+++ b/selfdrive/ui/sunnypilot/ui_state.py
@@ -22,6 +22,8 @@ class UIStateSP:
 
     self.sunnylink_state = SunnylinkState()
 
+    self.global_brightness_override: int = self.params.get("Brightness", return_default=True)
+
   def update(self) -> None:
     if self.sunnylink_enabled:
       self.sunnylink_state.start()
@@ -74,6 +76,7 @@ class UIStateSP:
     self.rainbow_path = self.params.get_bool("RainbowMode")
     self.chevron_metrics = self.params.get("ChevronInfo")
     self.active_bundle = self.params.get("ModelManager_ActiveBundle")
+    self.global_brightness_override = self.params.get("Brightness", return_default=True)
 
 
 class DeviceSP:
diff --git a/selfdrive/ui/ui_state.py b/selfdrive/ui/ui_state.py
index a86c84ada3..7aad769bb1 100644
--- a/selfdrive/ui/ui_state.py
+++ b/selfdrive/ui/ui_state.py
@@ -255,9 +255,18 @@ class Device(DeviceSP):
       else:
         clipped_brightness = ((clipped_brightness + 16.0) / 116.0) ** 3.0
 
-      clipped_brightness = float(np.interp(clipped_brightness, [0, 1], [30, 100]))
+      if gui_app.sunnypilot_ui():
+        if ui_state.global_brightness_override <= 0:
+          min_global_brightness = 1 if ui_state.global_brightness_override < 0 else 30
+          clipped_brightness = float(np.interp(clipped_brightness, [0, 1], [min_global_brightness, 100]))
+      else:
+        clipped_brightness = float(np.interp(clipped_brightness, [0, 1], [30, 100]))
 
     brightness = round(self._brightness_filter.update(clipped_brightness))
+
+    if gui_app.sunnypilot_ui() and ui_state.global_brightness_override > 0:
+      brightness = ui_state.global_brightness_override
+
     if not self._awake:
       brightness = 0