Wingnut - you-da-man!!! I checked all four plugs and 1~3 checked @0.2 ohms and #1 was open! I called every parts joint in the area and no one has it in stock. I ordered one from Murrays and it will be in tomorrow morning (it is a Bosch the failed one is a Beru). I will probably replace the other three but through my Brothers shop supplier at a much lower cost (paying $19.99 USD from Murrays for the one).
Thanks again - this site is priceless and the people on it are terrific (why can't the whole world be like us TDI'ers ?
) OH - by the way - these plugs are so much easier than the old VW Diesels to change - it took me 3 mins. to ck., find and take out the bad plug (that includes taking off the engine cover).
One more question - I am going to use anti-seize on the threads of the new plug - would it also be wise to use dielectric grease on the ends and boots? They currently look clean and show no corrosion but they also look dry.
Thanks again.