I don't know if yours will have a fuse "in line" or in the breaker panel. I added mine aftermarket and it has a inline fuse on the positive wire from the battery. From what you described it sounds like there's no power at the jack because not even the light will work.
Is the battery fully charged?
2011 Rockwood Signature Ultra Lite 8293SS, 12K Equal-i-zer
2016 Ford F-250 XLT SuperCrew, 6.2L, 4x4, 6'9" bed, 3.73
2010 Rockwood Roo 23SS (2012 - 2014)
2009 Ford F-150 XLT SuperCrew, 5.4L, 4x4, 5'6" bed (2012 - 2016)