Curious what the model number is for your converter...
My converter/charger unit is installed in the bottom compartment of WFCO WF8900 series Power Distribution Panel... Looks like this with the door opened...
The top section is the 120VAC Circuit Breakers and 12VDC Fuses and the bottom compartment houses the converter/charger unit...
I guess the newer trailers are doing it differently now...
Have you looked under the seats of the table area... They used to look like the above photo...
Roy Ken