I might be wrong Charlie, you're the expert on the GMC's, but
isn't the earlier Jimmy light the one that is the same as
the Vette? That's the one with the 'Bee-Hive lens and U-shaped
retainer bracket in the back. The later housing is simply
mounted thru the fender with studs and uses a shallower lens?
This is an illustration by Rob English:
http://www.pbase.com/dennygraham/image/155221077
Corvette Central:
http://www.pbase.com/dennygraham/image/160519395
dg

Last edited by Denny Graham; 06/23/2015 10:25 AM.
Denny G
Sandwich, IL