I sold a guy a set of euro lights and he didn't know how to install them and I gave him the instructions. I said he would have to buy the 6 hold female end connectors and he was able to get them from his MB dealer and he lives in NY. So if he can get them, I guarantee you can get them. I'd say your dealer doesn't know what they are talking about or are full of s*** or both. Also, how many people over here do euro light conversions? A ton! So if they can get them, you should be able to also! Either prod your dealer a little or find another one.
'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.
"A Mercedes-Benz is like a fine wine, it only gets better with age."