What XML code would make a gauge go black when AC is cold and dark

Several weeks ago I posed this question in the general FSX forum. My problem is that when engines are not running and the battery is off, the gauges in some planes (like the CRJ-700) become transparent and reveal erroneous graphics. See this other post:
http://205.252.250.26/cgi-bin/yabb2/YaBB.pl?num=1268422307/0#0
Some gauges still display data when shut down which is also bad. My question is what section of the XML gauge file is invoked when the cockpit is cold and dark.
Peter
http://205.252.250.26/cgi-bin/yabb2/YaBB.pl?num=1268422307/0#0
Some gauges still display data when shut down which is also bad. My question is what section of the XML gauge file is invoked when the cockpit is cold and dark.
Peter