At the end I have a picture of the wiring diagram that is recommended for the SC-1 remote control to be uses with the 356 freight station. The basic (original) diagram in the 356 shows that the on/off switch is simply connected between the A and B posts, the B post is also connected to a hot transformer terminal, and the C post is connected to the common post on the transformer.
When I have the 356 connected conventionally, the light in the shed is always lit and the on/off switch controls the vibrating coil (as it should).
When I have the 356 wired to the SC-1 as below, the activation button on the SC-1 only turns the shed light on and off, it doesn't control the vibrator coil as I would expect.
My SC-1 does work for the Icing Station, but that accessory only has 2 posts, not 3 like the freight station.
Any ideas would be appreciated.