I desperately need help. I have no heat on my 5th wheel -Northpoint 382flrb because I cannot access the control panel. After three separate calls to Lippert I have followed all of their instructions. The last call that had me test the controller wire. It registered 120 ohms. Now they want me to test the Terminating Resistors, the problem is they do not know where that would be located. I have open all false panels and cannot locate it. Does anyone know where it is located?????