Maybe this will help your search, the bottle and related parts should look like this for a 1951 vintage truck.
http://good-times.webshots.com/photo/2325785440102454676WgXKik
I have a pdf of the instructions I can e-mail to you if interested.

These shots are from a 1951 Truck Accessories Filmstrip:
http://good-times.webshots.com/photo/2749685060102454676TSMHIq
http://good-times.webshots.com/photo/2050953800102454676uIvfGh
http://good-times.webshots.com/photo/2428949040102454676eScfun

Last edited by Brad Allen; 07/27/2011 11:54 AM.