2006 HOLIDAY RAMBLER SAVOY LX 32FKD BATTERY WIRING

HERE ARE SOME PICTURES. LET ME KNOW IF YOU CAN'T SEE THEM. THE FOUR WIRES THAT ARE NOT CONNECTED TO ANYTHING SEEM TO LEAD UP INTO THE CAP OF THE TRAILER. I DON'T UNDERSTAND WHAT THESE WIRES CAN BE FOR BECAUSE ALL MY LIGHTS WORK (INSIDE AN OUT),BOTH SLIDES,ELECTRIC JACK,WATER HEATER PILOT CLICKS, RANGE HOOD WORKS,WATER PUMP KICKS ON,BATHROOM FAN WORKS,FRIG LIGHTS UP,TANK MONITOR LIGHTS UP. I CAN NOT THINK OF ANY OTHER ITEM THAT IS ELECTRICAL ASIDE FORM THE AC(I KNOW HAS NOTHING TO DO WITH 12V SUPPLY). I AM NOT SURE HOW TO GO ABOUT TESTING THE CONVERTER WITH ONLY 12V SUPPLY. I WILL HAVE MY 50 AMP SERVICE HOOKED UP BY THIS WEEKEND SO HOPEFULLY I CAN FIGURE THIS ISSUE OUT. I ALSO INCLUDED A PICTURE OF SOME SORT OF HOOK ON THE FRAME NEAR THE TONGUE AND I HAVE NO IDEA WHAT ITS FOR. I INCLUDED ANOTHER PICTURE OF THE FRAME JUST IN FRONT OF THAT HOOK LOOKING THING AND ITS OBVIOUS THAT SOME SORT OF RECTANGULAR OBJECT WAS MOUNTED (I'M WONDERING IF THE WIRES LED TO SOMETHING THAT WAS MOUNTED HERE). THANKS IN ADVANCE FOR ANY RESPONSES.