I finally found these. It seemed very expensive to me but real German stuff is getting hard to find. I have a lead on one more of each.

Single white female wiper switch

I share your passion.

Well the excitement has worn off because of bad information. These will NOT FIT 75-76 columns. They only fit 72,73,74 columns. The only way for me to use them is CHANGE the column, easy to do but I am not sure about the late steering column lock. I would have to take everything out to test fit. Starting to look like I will be selling these.

Are you 100% sure about the fit? I'm almost sure they are the same.

Yes, the base of the wiper switch will have to be cut away to clear the metal in the late column. The reason I know is I pulled my 75 switches only to find out some one had done that to make the wiper assembly to fit. The trim edge on the TSS is taller on the early one, to work in the late one it would have to be filed down. Since these are very hard to find and expensive, I would rather sell them instead of hacking on them.

How expensive are they?

The TSS is already sold and I have posted the wiper switch for $149 in the classifieds.