The cruise control in my recently purchased '01 Excursion isn't working. I've done a lot of searches on the forums and discovered there was a recall for a wiring harness: 2001 FORD EXCURSION Recalls

I called my local dealer and they stated there aren't any open recalls for this vehicle, so the previous owner must have taken care of it.

Is there any way I can verify that the warranty work was done? Can I visually inspect the harness?

Also, are there any ideas of what else I can check to fix the cruise control? The lights on the steering wheel are illuminated.

Thanks in advance!
-Eric