First, please put the basic info for your car in your signature so it will always be seen.
Figuring out how the brake and turn signal lights work on these classic Fords is hard. The bulb has 2 elements that do 3 things. 2 are controlled with the turn signal switch with flat springs and a contact hidden below the lever rocker plate. Often the problem is no contact at that point.
Also, the new TS switch will not have the plastic connection block. You must remove each wire by pushing in on small finger sticking out on the side of each pin. Find something to push it in before trying to yank it out.
1968, hardtop, 289, C4, seafoam green.
1966, hardtop, 289, original 3 speed, on the road and fun to drive.
1968, hardtop, 200, 3 speed, in work.