Hello,
We have just done this twice, didnt have correct tension on the wires and the little metal end fell off causing it to break a second time!!!
The wire we bought came with instructions and special glue and little ends to hold wires in.
Very fiddly and difficult job!!! Key is to get both plastic brackets for glass level on their sliders and keep tension as tight as possible. Cut new wires to length from the existing ones as best you can if they have snapped. Can be done....eventually depends on how patience you have haha!!
Donna Davenport
March 2008