diff --git a/homeassistant/components/insteon.py b/homeassistant/components/insteon.py
index 43685f5efc3..254262990ed 100644
--- a/homeassistant/components/insteon.py
+++ b/homeassistant/components/insteon.py
@@ -12,12 +12,11 @@ from homeassistant.helpers import validate_config
 from homeassistant.loader import get_component
 from homeassistant.helpers.entity import ToggleEntity
 from homeassistant.const import (
-    CONF_USERNAME, CONF_PASSWORD, ATTR_DISCOVERED,
+    CONF_USERNAME, CONF_PASSWORD, CONF_API_KEY, ATTR_DISCOVERED,
     ATTR_SERVICE, EVENT_PLATFORM_DISCOVERED)
 
 DOMAIN = "insteon"
 REQUIREMENTS = ['insteon_hub==0.4.5']
-API_KEY = "3eb14d15-a486-4d9e-99af-179d0e9417c11444718937.80636061"
 INSTEON = None
 DISCOVER_LIGHTS = "insteon.lights"
 _LOGGER = logging.getLogger(__name__)
@@ -30,15 +29,22 @@ def setup(hass, config):
     """
     if not validate_config(
             config,
-            {DOMAIN: [CONF_USERNAME, CONF_PASSWORD]},
+            {DOMAIN: [CONF_USERNAME, CONF_PASSWORD, CONF_API_KEY]},
             _LOGGER):
         return False
 
     import insteon
+
     username = config[DOMAIN][CONF_USERNAME]
     password = config[DOMAIN][CONF_PASSWORD]
+    api_key = config[DOMAIN][CONF_API_KEY]
+
     global INSTEON
-    INSTEON = insteon.Insteon(username, password, API_KEY)
+    INSTEON = insteon.Insteon(username, password, api_key)
+
+    if INSTEON is None:
+        _LOGGER.error("Could not connect to Insteon service.")
+        return
 
     comp_name = 'light'
     discovery = DISCOVER_LIGHTS
diff --git a/homeassistant/components/light/insteon.py b/homeassistant/components/light/insteon.py
index 07c4d19b202..c1632133d8f 100644
--- a/homeassistant/components/light/insteon.py
+++ b/homeassistant/components/light/insteon.py
@@ -13,4 +13,6 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
     for device in INSTEON.devices:
         if device.DeviceCategory == "Switched Lighting Control":
             devs.append(InsteonToggleDevice(device))
+        if device.DeviceCategory == "Dimmable Lighting Control":
+            devs.append(InsteonToggleDevice(device))
     add_devices(devs)