Anyway here's a tip for nothing. If the oil level on the transmission dipstick is above the max indicator watch out when you remove the existing NSS. I was lucky to escape with a relatively small coating on my arm but the driveway didn't do so well. Of course this is now the area that I need to lie in to put the new part back.
So it's job done and it starts and I have working reversing lights. Cost me $20 for the part and another $10 for a 1" deep socket and 3/8" to 1/2" drive converter, Took me about an hour of which most of it was mopping up the oil spill.