With 3B's part number and a little googling (actually first result) revels one for sale here from these people http://www.oldparts.com/

Also for sale in Hemmings as a 6V relay (is that what you need)
http://www.hemmingsdigital.com/hemmings/201006?pg=276#pg276 (and search for 1116855)

Even more google results


Grigg


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-