Interior Fuse Box Location: 2000-2005 Cadillac DeVille Click to view0:21The video above shows how to replace blown fuses in the interior fuse box of your 2004 Cadillac DeVille in addition to the fuse panel diagram location. Electrical components such as your map light, radio, heated seats, high beams, power windows all have fuses and if they suddenly stop working, chances are you have a fuse Author: Braeger Chevy Cadillac DeVille - 2005 Fuse Box Diagram Cadillac; DeVille - 2005 Fuse Box; If a door or the trunk is opened without a key or a. remote keyless entry transmitter, the horn will sound. and the lamps will flash for about 30 seconds. Remember, the theft-deterrent system will not arm if you. lock the doors with a key or use the manual door.