Have you removed your batteries recently - You may have reconnected them in REVERSE POLARITY or sparked the leads coming from the converter/charger unit.
Check for an IN-LINE fuse very close to the battery terminals and also check on the 12VDC FUSE PANEL for two fuses labeled REVERSE POLARITY. These two fuses are usually off the them self.
If the tongue jack is working which is directly connected to the battery terminal then there is a DISCONNECT (Blown FUSE) somewhere between the batteries and the 12VDC FUSE PANEL
Roy and Carolyn
I claim Horse Creek Country in Southern Ill - Momabear is from North Texas
We live in King George VA
RETIRED DOD DOAF DON CONTRACTOR Electronics Tech 42YRS
"We're burning daylight" - John Wayne
2008 STARCRAFT 14RT OFF-ROAD POPUP with PD9260C and three 85AH 12VDC batteries
2010 F150 FX4 5.4 GAS with 3.73 gears - Super Cab - Towing Package - 2KW Honda EU2000i Gen
K9PHT (since 1957) 146.52Mhz
"We always have a PLAN B"