TPB, if you pull the window garnish, you will be able to pull the headline down enough to see the mounting brackets. The brackets are pieces that are welded to the cab roof. They hang down maybe 2 inches. There should be a 1/2 inch hole in the center, with three holes around it. The spring end of the visor support fits in the center hole with the support screws going in the remaining holes. I hope this helps. I cannot stress enough get an assembly manual and a shop manual. I also like Motors manuals. They are a wealth of info and have tons of pictures. Without those three I would be lost on my project.
