Just as I figured, my coal burning POS computer isn't up to the task. The interesting part is, the 73 should have pretty much the same compnents for the cruise, but I believe it was back in the turn signal switch.
The only thing I can think of is GM wanted to get rid of all the dealer installed units that were not getting sold, so they started selling them as OE parts in 72. This is just speculation, but it makes more sence than some of the stories I have heard.