A Most Definite YES
After reading the initial article I removed the cruise control stalk from the complete 3 stalk unit I had purchased for my 147. I already knew that a plug was there so it was then a simple case of removing the outer cover (3 screws using allen keys) the locating the stalk into position, which can be a little fiddly even though I had seen it in place before I removed it from the old unit. I believe this helped immensely, it's a pity I didn't take a photo for your benefit, then I replaced the screw holding the stalk in position. Then a simple cut out is required to allow for the addition of the cruise control stalk & then test it!
Beautiful a little green light appears when you have cruise fitted, obviously you have to be moving before this shows then use the + to set the speed & you are away.
So I was pleased to not having been forced to remove the steering wheel, which I had originally thought (as I had the total unit containing 3 stalks washers, lights etc.
Someone once told me that Car Manufacturers these days always fit a complete wiring loom for every conceivable extra there is, whether the final car uses the options or not.
This was certainly the case for me, but if in doubt simply check to see if there are any spare plugs for the unit you wish to have fitted & the chances are the plug will be there.
I'm a happy bunny now Thanks to "ARF"