This is mine from the 37, seems to be missing something on the right hand dial side (suspect speed control), the left is a pull in and out action (probably on and off) will be sending it to the wiperman to rebuild. I can not remember how my 49 4rd vac wipers worked,its been many years, but it was not good I definitely remember that. Hope that helps with a visual. I am sure some one who is not a night owl will post in the a.m. My interior panel has two holes that the two controls poke thru.
[IMG]http://i111.photobucket.com/albums/n142/DCINSC/37%20CHEVY%20REBUILD/DSCF4070.jpg[/IMG]

Last edited by wasat again; 03/29/2011 5:33 AM. Reason: forgot link

1937 Chevy 1/2-Ton
In the Gallery