13+ VDC at the battery, sounds like it's working or the battery is well charged. To check the converter: At the battery you should see the voltage go up about a volt when the converter is on vs. off. If yes, it's working. If not, then check to see if you have 120 vac input at the converter. If yes, then the converter could be bad - or a fuse blown or breaker tripped on the converter. If not, then figure out why no power input to the converter - unplugged, breaker tripped, etc.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.