As it happens I’m fixing my locking mechanism to. I have an 89S2 so there may be a slight difference in what the pre 85.5 looks like. I know there are 2 types of cables & 2 types of cable arms that attach to the motor armature. Your picture shows the earlier type arm & cable. The newer 85.5 & newer design has a pin coming out of the arm top and the cable has an eye that fits over it.
I have attached pictures of what my center area looks like. Seems kind of complicated for what it does!
Let me know if you need more pictures or if I got the wrong area of interest.
Rob
