I need to replace my wiper switch and don't care if its Delco, Niehoff, Borg-Warner, etc. Does anyone know the part #? None of the local auto parts shops have it in their system.

Last time I went looking locally I couldn't find one.
The link up at the Upper Right of page to "Ground Up" restoration parts will give you access to them - they, as well as many of he 'repoppers' carry a replacement switch.

Original GM part number was #1993395 (group 10.163) but they are long discontinued.

SW-3 from Ricks Camaro. Sorry it isn't a particular brand name. That was all the info they had.