Just about any GM sedan 64-67 is going to have a similar switch.

This one will work. http://www.ebay.com/itm/1966-GTO-LEMANS-...

If you are looking for an OEM switch then contact this company.

http://www.classicbuicks.com/B_Windshiel...

Another site to look at

http://www.1966sale.com/1966-lesabre/

So did mine; I just put a toggle switch under the dash ; Works fine !

Go with Rex

OK I have a 1966 Buick Lesabre 2 door with a 340 2 bbl in it and a few days ago my Wiper/Washer switch broke apart and now I am trying to find a new one. HELP!