diff --git a/assets/support/configdefault.json b/assets/support/configdefault.json
index 3699b7d..050ccc6 100755
--- a/assets/support/configdefault.json
+++ b/assets/support/configdefault.json
@@ -259,12 +259,12 @@
                 }
             },
             "relay": {
-                "enabled": true,
+                "enabled": false,
                 "colors": {
                     "on": [
                         255,
-                        0,
-                        0
+                        128,
+                        128
                     ],
                     "off": [
                         0,
@@ -274,7 +274,7 @@
                 },
                 "triggers": {
                     "horn": {
-                        "enabled": true,
+                        "enabled": false,
                         "pin": 0,
                         "invert": false,
                         "text": "HORN"
diff --git a/dashcam.py b/dashcam.py
index 2a7c539..b2e169f 100755
--- a/dashcam.py
+++ b/dashcam.py
@@ -252,7 +252,7 @@ def save_dashcam_segments(file1, file2=""):
 relay_triggers = {}
 for stamp in config["dashcam"]["stamps"]["relay"]["triggers"]:
     if (config["dashcam"]["stamps"]["relay"]["triggers"][stamp]["enabled"] == True): # Check to see if this relay stamp is enabled.
-        relay_trigger[stamp] = Button(int(config["dashcam"]["stamps"]["relay"]["triggers"][stamp]["pin"]))
+        relay_triggers[stamp] = Button(int(config["dashcam"]["stamps"]["relay"]["triggers"][stamp]["pin"]))
 
 
 def apply_dashcam_stamps(frame, device=""):
@@ -307,10 +307,10 @@ def apply_dashcam_stamps(frame, device=""):
         stamp_number = 0
         for stamp in config["dashcam"]["stamps"]["relay"]["triggers"]:
             if (config["dashcam"]["stamps"]["relay"]["triggers"][stamp]["enabled"] == True): # Check to see if this relay stamp is enabled.
-                if (relay_trigger[stamp].is_pressed): # Check to see if the relay is triggered.
-                    relay_stamp_color = config["dashcam"]["stamps"]["relay"]["color"]["on"]
+                if (relay_triggers[stamp].is_pressed): # Check to see if the relay is triggered.
+                    relay_stamp_color = config["dashcam"]["stamps"]["relay"]["colors"]["on"]
                 else:
-                    relay_stamp_color = config["dashcam"]["stamps"]["relay"]["color"]["off"]
+                    relay_stamp_color = config["dashcam"]["stamps"]["relay"]["colors"]["off"]
                 relay_stamp = config["dashcam"]["stamps"]["relay"]["triggers"][stamp]["text"] # Set the relay stamp text to a blank placeholder. Elements will be added to this in the next steps.
                 (label_width, label_height), baseline = cv2.getTextSize(relay_stamp, 2, config["dashcam"]["stamps"]["size"], 1)
                 relay_stamp_position = [width - 10 - label_width, (30 * stamp_number) + round(30 * config["dashcam"]["stamps"]["size"])] # Determine where the diagnostic overlay stamp should be positioned in the video stream.
diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index c256755..5cd6dee 100755
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -7,7 +7,7 @@ This document contains detailed instructions on how to install Predator.
 
 If you're already familiar with Predator, and you just want a quick set-up guide, you can use the following steps to set everything up. For more detailed instructions, skip to the 'Full Install Guide' later in the document.
 
-1. Install Python packages: `pip3 install pytz validators requests gps gpsd-py3 opencv-python cvlib tensorflow keras silence-tensorflow psutil rns lxmf`
+1. Install Python packages: `pip3 install pytz validators requests gps gpsd-py3 opencv-python cvlib tensorflow keras silence-tensorflow psutil rns lxmf gpiozero`
     - If you see an "externally managed environment" error while installing Python packages, consider creating a virtual environment by running the following command in the Predator directory: `python3 -m venv .venv; source .venv/bin/activate`
         - In the future, you will need to manually start the virtual environment by navigating to the Predator directory and running the following command: `source .venv/bin/activate`
         - Note that depending on a virtual environment is likely to cause issues if you want to run Predator through Optic, Cortex, or another front-end interface, since these interfaces run outside of the virtual environment. In this case, you should try to install the required Python packages through your operating system's default package manager.
@@ -35,6 +35,7 @@ This is the installation process for Predator and all of its dependencies. This
     - Optional:
         - `psutil`: Required to process disk usage information in management mode and dash-cam mode.
         - `lxmf`, `rns`: Required to send offline parking notifications over the Reticulum stack.
+        - `gpiozero`: Required to trigger events using GPIO inputs.
 - System packages: `sudo apt-get install ffmpeg mpg321 gpsd gpsd-clients imagemagick fswebcam`
     - Highly recommended:
         - `ffmpeg`: Required for audio/video merging in dash-cam mode, and video processing in pre-recorded mode.