rangemaster 110 dual fuel warmer disconnected?

Our RangeMaster is just out of warranty and my wife tells me the warmer has never worked. I have removed the front and found that both the blue and red wires are just hanging, they have the little flat solder type of heads that appear to have been stuck [or maybe not] to the element in the glass.Is it possible to repair this myself? is there a special adhesive?, or do i buy a new assembly? i find the whole matter quite strange.I wonder could this have been missed on assembly? Many Thanks.