This is an optional factory part that came on 1946, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57 and 58 Dodge trucks. It is New Old Stock and and mounts under the dash. It is part # 1501778. 

All of our used parts were removed from rust-free Central Oregon high desert cars and most of them have been in dry storage for 30-40 years, for more information see my "About Me" page. E-mail us with any questions BEFORE the end of the auction. We will combine shipping on multiple items... This part comes from the high desert of Central Oregon and has been stored inside in this dry climate.