Burnt turn signal switch 68 Valiant

A photo would help. I am assuming you had to wire the red & white wires on the cam to wires in your column. Early cars didn't have those wires (SM9 cam, I recall) I think they were added when the cars changed to the single rear taillights where the running and brake filaments are in the same bulb (~1967). You should have used solder & heat shrink to connect. Did spring-loaded contacts pop out when you removed the cam? If so, they must go back a very specific way or the switch won't work exactly right. Somebody posted w/ photos here a few years ago. Might just apply to earlier cars.