Excellent info sir. Thank you. My bracket is the same. I suspected some form of duo-light fixture. This is very helpful. I had forgotten that once the bed goes back on the frame, there will be more opportunities for good rear lighting beyond the lone bracket. Without the bed, it seems a tad bit spare back there.
Thank you again for your help.
I am getting ready to re-mount the nose/radiator assembly in the next few days. It is beginning to look like a truck again.
I hope to have the fenders sprayed and finished before Winter settles in.
Be well,
jp