you might be able to get away with a lens replacement but if not good luck getting a full light. you will need to find a light that has 3 taps on the back for lamp adjustment.
it took me 2 month to track down a new pair for mine. i ended up paying $240 for the pair of lights. when i bought them the guy told me they were only 1 of 2 pairs in the states and they were in his private collection.