[ljackson]

My truck had them broken off too. I worked on mine again a few weeks ago. I did not get it right the first time. There are 3 "L" shaped tabs that engage the collar. They point counterclockwise. When the collar is installed over the tabs, it is turned clockwise a few degrees and the turn signal switch clamps the 2 parts in place. Can you tell where the tabs were? I can't remember what the measurements were. I had some pics with measurements, but they accidentally got deleted. Maybe someone will see this and chime in. My parts truck is buries in snow right now.