Check the panels under the fridge and oven in this 2005 GLENDALE Titanium photo next to the floor.
You need to post the model number of the converter/charger unit.
Also you may have a folder stashed away that has all of the different manufacturer sheets on the appliances installed in your trailer. Mine was located stuck in next to the water heater when I purchased my new trailer. You should have a information sheet on everything installed including the converter/charger unit.
On the WF 8900 series Converter/charger 12VDC Distribution Panel board the two fuses off to them self would be the the REVERSE Polarity fuses. The two GREEN ATC fuses shown in the photo... You don't have to remove the outside cover to gain access to these fuses-just push in on the door/lid to open.
NOTE: DISREGARD MY COMMENTS - Sounds like you have found what you need.Roy Ken