I think from my experience of fitting CC you first need to find the spare connector, it should be a small, square profile, white plastic socket with 4 wires. It should be somewhere in the steering column shroud.
Also from my experience of fitting a 147 stalk to a 156, the plug on the end of the stalk wires and the socket on the car wiring do not match, neither do the colours of the wires.
If it is the same with your car and the stalk you try to fit, you will have to re-wire using the information in the link given earlier in this thread. That is what I had to do but once done you will find it all works just as it should.