1980 Silverado Cruise Fuse?

[silencer]

Hi! First post, thanks for the add.
I've spent hours going through websites, manuals, wiring diagrams, but I can't seem to find the fuse for the no-resume cruise control. The illustrations all refer to one, but there's no mention of where or which fuse it is, that I can find for my particular model 1980 c20 silverado 6.6l 4x4 camper special.
I've checked for additional problems, and everything seems to be working, for the exception of no power to the control button. It really seems like a blown fuse - if I could find it.
I've pulled all of the fuses manually and looked, but I may have missed one as the view is obstructed.
Any suggestions?
Thanks for any help anyone might have.

[DanMcG]

Looks like the second one down on the far left side. #139

I can't seem to attach a pic of the location, I'll add it when I figure it out.