fgdata/Aircraft/Instruments/brakes.xml

<?xml version="1.0"?>
<!--
 A simple indicator lamp. Used here as a brake light.
 John Check <j4strngs@usa.net>
-->

<PropertyList>
 <name>Brake</name>
 <w-base>64</w-base>
 <h-base>26</h-base>

 <layers>
<!-- The "bulb" -->
 <layer>
   <name>Brake light</name>
   <type>switch</type>
    <layer>
     <condition>
      <property>/controls/gear/brake-parking</property> <!-- parking brake -->
     </condition>
     <name>on</name>
     <texture>
     <path>Aircraft/Instruments/Textures/warning-lamps.rgb</path>
     <x1>0.25</x1>
     <y1>0.0</y1>
     <x2>0.5</x2>
     <y2>0.095</y2>
     </texture>
     <w>64</w>
     <h>26</h>
    </layer>
    <layer>
     <name>off</name>
     <texture>
     <path>Aircraft/Instruments/Textures/warning-lamps.rgb</path>
     <x1>0.0</x1>
     <y1>0.0</y1>
     <x2>0.25</x2>
     <y2>0.095</y2>
     </texture>
     <w>64</w>
     <h>26</h>
   </layer>
  </layer>
<!-- translucent lens -->  
  <layer>
   <name>lens</name>
   <texture>
    <path>Aircraft/Instruments/Textures/warning-lamps.rgb</path>
     <x1>0.495</x1>
     <y1>0.0875</y1>
     <x2>0.75</x2>
     <y2>0.1975</y2>
   </texture>
   <transformations>
    <transformation>
    <type>y-shift</type>
    <offset>-2</offset>
    </transformation>
   </transformations>
   <w>64</w>
   <h>26</h>
  </layer>
 </layers>

 <actions>
  <action>
   <desc>brake</desc>
   <button>0</button>
   <x>-32</x>
   <y>-13</y>
   <w>64</w>
   <h>26</h>
   <binding>
    <command>property-toggle</command>
    <property>/controls/gear/brake-parking</property>
   </binding>
  </action>
 </actions>
</PropertyList>