Reply to "A/C issues"

Another little something has come up.

My car is #7102, among last of the Ford era cars

Is anyone aware of A/C wiring changes at the "anti icing" switch area that may have been a late production change NOT reflected on the late "L" model wiring diagram?

I find an extra relay or something down there and my rotary dash switch only has two wires, a brown and a blue/black.

The white/black wire that's supposed to control the A/C comp. clutch terminates on this extra relay looking thing along with three others (a yellow, a dk blue, and a black).

All the unidentified wires go into a sheath and disappear behind the heater box. I cannot see where they go.