Just finishing up a complete rewire of a 68 Cutlas, all new switches, bulbs sockets etc... The old wiper switch was held in with a hose clamp, the new wiper switch didn't come with the locking nut or washer. I believe the washer locks in to the dash to keep the switch from just spinning.

Does anyone know where I can get the wiper switch hardware? I have the switch and **** just no nut or lock washer.

Appreciate your feedback.

 

The wiper switch mounting has to be secure in order to provide a strong ground signals through the switch to the wiper motor. See if there is a nut and bolt supply that can hook you up with a thin nut and star washer. Or perhaps a member here may have those parts. I moved your thread to the parts wanted forum.

 

they are thin radio shaft style nuts, can’t seem to find one.

 

They look like the old style radio shaft nuts. The whole car has been rewired.... this is the only part missing.