vacuum wiper on off switch

[Zack]

1930 deluxe coupe.
Can someone post a picture of the correct size of the hole needed for the on/off vacuum wiper switch. I have to drill a hole through the metal header and I want to make sure I get it correct

thanks

 

[Gary WA]

Here is some info Thanks to Marco T. measure diameter from wiper itself for hole size. Maybe some one else has dia.

 

[Zack]

Gary.
Thanks for the picture. I have the correct windshield holes but I need to know what the hole on the inside looks like. Is it the same diameter as the windshield frame, or is it elongated to accommodate the windshield movement?
Thanks

 

[Gary WA]

photos help? red is 30 Delux Del,Green is 30 CCPU, 5/8" wide

 

[Zack]

Gary:
yes thanks.....is that a grommet where the switch goes through the windshield?

 

[Gary WA]

Gary:
yes thanks.....is that a grommet where the switch goes through the windshield?

No grommet