Well, I made a little bit of progress today. The master dash switch is in (a 5-minute job), and the cruise control computer is in. This, however, is not quite a 5-minute job.
Suffice to say that Mazda decided to mount the cruise control computer in an almost impossible place to reach unless you're a trained capuchin monkey with tiny little monkey hands. I guess it would also be easier if you took the dash all the way out of the car, but that's not exactly a practical option. See, it's wedged up in the driver's kick panel area, smushed between the clutch pedal and the fuse box, and conveniently pinned in behind the hood release cable. I'd take a picture, but there's really not room for my head and a camera. As an added bonus, the plug for the computer has almost no service loop. The instructions I found say to simply cut the tape around the harness to free up the loop. That probably works if you can get a knife in there to slice the tape without cutting something vital. I managed to open it up a little, but not so much that it made things any easier. Thus, installation requires three hands: One to hold the box in place against the kick panel, one to scooch the box around and line up the bolt hole, and a third hand to repeatedly drop the 6-mm bolt under the carpet. Scooch. Drop. Cuss. Repeat.
However, one hour and 15 minutes later... great success. I'm going to go soak my hands in Bactine now.
More to follow... ::Banana::