We have an old pre Civil War farm house in rural Miss which was wired just after WW2 when electricity was made available in the area. All of the lights in the rooms are bare bulbs suspended from the ceiling through round ceramic box covers using twisted flexible cloth insulated wire. The wire has become worn and a couple have shorted out due to abrasion. Is this type of lamp wire still available? I would like to continue with the same type of lights and do not wish to replace with modern fixtures, but for safety sake I would like to replace all of the wire. Do you have any suggestions where I could find this product?